250 lines
9.3 KiB
LLVM
250 lines
9.3 KiB
LLVM
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; Test the saving and restoring of FPRs in large frames.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck -check-prefix=CHECK-NOFP %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 -frame-pointer=all | FileCheck -check-prefix=CHECK-FP %s
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; Test a frame size that requires some FPRs to be saved and loaded using
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; the 20-bit STDY and LDY while others can use the 12-bit STD and LD.
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; The frame is big enough to require two emergency spill slots at 160(%r15),
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; as well as the 8 FPR save slots. Get a frame of size 4128 by allocating
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; (4128 - 176 - 8 * 8) / 8 = 486 extra doublewords.
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define void @f1(double *%ptr, i64 %x) {
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; CHECK-NOFP-LABEL: f1:
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; CHECK-NOFP: aghi %r15, -4128
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; CHECK-NOFP: .cfi_def_cfa_offset 4288
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; CHECK-NOFP: stdy %f8, 4120(%r15)
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; CHECK-NOFP: stdy %f9, 4112(%r15)
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; CHECK-NOFP: stdy %f10, 4104(%r15)
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; CHECK-NOFP: stdy %f11, 4096(%r15)
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; CHECK-NOFP: std %f12, 4088(%r15)
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; CHECK-NOFP: std %f13, 4080(%r15)
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; CHECK-NOFP: std %f14, 4072(%r15)
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; CHECK-NOFP: std %f15, 4064(%r15)
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; CHECK-NOFP: .cfi_offset %f8, -168
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; CHECK-NOFP: .cfi_offset %f9, -176
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; CHECK-NOFP: .cfi_offset %f10, -184
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; CHECK-NOFP: .cfi_offset %f11, -192
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; CHECK-NOFP: .cfi_offset %f12, -200
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; CHECK-NOFP: .cfi_offset %f13, -208
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; CHECK-NOFP: .cfi_offset %f14, -216
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; CHECK-NOFP: .cfi_offset %f15, -224
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; ...main function body...
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; CHECK-NOFP: ldy %f8, 4120(%r15)
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; CHECK-NOFP: ldy %f9, 4112(%r15)
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; CHECK-NOFP: ldy %f10, 4104(%r15)
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; CHECK-NOFP: ldy %f11, 4096(%r15)
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; CHECK-NOFP: ld %f12, 4088(%r15)
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; CHECK-NOFP: ld %f13, 4080(%r15)
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; CHECK-NOFP: ld %f14, 4072(%r15)
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; CHECK-NOFP: ld %f15, 4064(%r15)
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; CHECK-NOFP: aghi %r15, 4128
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP-LABEL: f1:
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; CHECK-FP: stmg %r11, %r15, 88(%r15)
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; CHECK-FP: aghi %r15, -4128
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; CHECK-FP: .cfi_def_cfa_offset 4288
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; CHECK-FP: lgr %r11, %r15
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; CHECK-FP: .cfi_def_cfa_register %r11
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; CHECK-FP: stdy %f8, 4120(%r11)
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; CHECK-FP: stdy %f9, 4112(%r11)
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; CHECK-FP: stdy %f10, 4104(%r11)
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; CHECK-FP: stdy %f11, 4096(%r11)
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; CHECK-FP: std %f12, 4088(%r11)
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; CHECK-FP: std %f13, 4080(%r11)
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; CHECK-FP: std %f14, 4072(%r11)
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; CHECK-FP: std %f15, 4064(%r11)
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; ...main function body...
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; CHECK-FP: ldy %f8, 4120(%r11)
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; CHECK-FP: ldy %f9, 4112(%r11)
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; CHECK-FP: ldy %f10, 4104(%r11)
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; CHECK-FP: ldy %f11, 4096(%r11)
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; CHECK-FP: ld %f12, 4088(%r11)
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; CHECK-FP: ld %f13, 4080(%r11)
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; CHECK-FP: ld %f14, 4072(%r11)
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; CHECK-FP: ld %f15, 4064(%r11)
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; CHECK-FP: lmg %r11, %r15, 4216(%r11)
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; CHECK-FP: br %r14
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%y = alloca [486 x i64], align 8
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%elem = getelementptr inbounds [486 x i64], [486 x i64]* %y, i64 0, i64 0
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store volatile i64 %x, i64* %elem
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%l0 = load volatile double, double *%ptr
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%l1 = load volatile double, double *%ptr
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%l2 = load volatile double, double *%ptr
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%l3 = load volatile double, double *%ptr
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%l4 = load volatile double, double *%ptr
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%l5 = load volatile double, double *%ptr
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%l6 = load volatile double, double *%ptr
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%l7 = load volatile double, double *%ptr
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%l8 = load volatile double, double *%ptr
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%l9 = load volatile double, double *%ptr
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%l10 = load volatile double, double *%ptr
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%l11 = load volatile double, double *%ptr
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%l12 = load volatile double, double *%ptr
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%l13 = load volatile double, double *%ptr
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%l14 = load volatile double, double *%ptr
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%l15 = load volatile double, double *%ptr
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%add0 = fadd double %l0, %l0
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%add1 = fadd double %l1, %add0
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%add2 = fadd double %l2, %add1
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%add3 = fadd double %l3, %add2
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%add4 = fadd double %l4, %add3
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%add5 = fadd double %l5, %add4
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%add6 = fadd double %l6, %add5
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%add7 = fadd double %l7, %add6
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%add8 = fadd double %l8, %add7
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%add9 = fadd double %l9, %add8
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%add10 = fadd double %l10, %add9
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%add11 = fadd double %l11, %add10
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%add12 = fadd double %l12, %add11
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%add13 = fadd double %l13, %add12
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%add14 = fadd double %l14, %add13
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%add15 = fadd double %l15, %add14
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store volatile double %add0, double *%ptr
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store volatile double %add1, double *%ptr
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store volatile double %add2, double *%ptr
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store volatile double %add3, double *%ptr
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store volatile double %add4, double *%ptr
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store volatile double %add5, double *%ptr
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store volatile double %add6, double *%ptr
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store volatile double %add7, double *%ptr
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store volatile double %add8, double *%ptr
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store volatile double %add9, double *%ptr
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store volatile double %add10, double *%ptr
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store volatile double %add11, double *%ptr
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store volatile double %add12, double *%ptr
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store volatile double %add13, double *%ptr
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store volatile double %add14, double *%ptr
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store volatile double %add15, double *%ptr
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ret void
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}
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; Test a frame size that requires some FPRs to be saved and loaded using
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; an indexed STD and LD while others can use the 20-bit STDY and LDY.
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; The index can be any call-clobbered GPR except %r0.
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;
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; Don't require the accesses to share the same LLILH; that would be a
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; good optimisation but is really a different test.
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;
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; As above, get a frame of size 524320 by allocating
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; (524320 - 176 - 8 * 8) / 8 = 65510 extra doublewords.
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define void @f2(double *%ptr, i64 %x) {
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; CHECK-NOFP-LABEL: f2:
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; CHECK-NOFP: agfi %r15, -524320
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; CHECK-NOFP: .cfi_def_cfa_offset 524480
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; CHECK-NOFP: llilh [[INDEX:%r[1-5]]], 8
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; CHECK-NOFP: std %f8, 24([[INDEX]],%r15)
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; CHECK-NOFP: std %f9, 16({{%r[1-5]}},%r15)
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; CHECK-NOFP: std %f10, 8({{%r[1-5]}},%r15)
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; CHECK-NOFP: std %f11, 0({{%r[1-5]}},%r15)
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; CHECK-NOFP: stdy %f12, 524280(%r15)
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; CHECK-NOFP: stdy %f13, 524272(%r15)
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; CHECK-NOFP: stdy %f14, 524264(%r15)
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; CHECK-NOFP: stdy %f15, 524256(%r15)
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; CHECK-NOFP: .cfi_offset %f8, -168
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; CHECK-NOFP: .cfi_offset %f9, -176
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; CHECK-NOFP: .cfi_offset %f10, -184
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; CHECK-NOFP: .cfi_offset %f11, -192
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; CHECK-NOFP: .cfi_offset %f12, -200
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; CHECK-NOFP: .cfi_offset %f13, -208
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; CHECK-NOFP: .cfi_offset %f14, -216
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; CHECK-NOFP: .cfi_offset %f15, -224
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; ...main function body...
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; CHECK-NOFP: ld %f8, 24({{%r[1-5]}},%r15)
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; CHECK-NOFP: ld %f9, 16({{%r[1-5]}},%r15)
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; CHECK-NOFP: ld %f10, 8({{%r[1-5]}},%r15)
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; CHECK-NOFP: ld %f11, 0({{%r[1-5]}},%r15)
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; CHECK-NOFP: ldy %f12, 524280(%r15)
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; CHECK-NOFP: ldy %f13, 524272(%r15)
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; CHECK-NOFP: ldy %f14, 524264(%r15)
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; CHECK-NOFP: ldy %f15, 524256(%r15)
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; CHECK-NOFP: agfi %r15, 524320
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; CHECK-NOFP: br %r14
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;
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; CHECK-FP-LABEL: f2:
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; CHECK-FP: stmg %r11, %r15, 88(%r15)
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; CHECK-FP: agfi %r15, -524320
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; CHECK-FP: .cfi_def_cfa_offset 524480
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; CHECK-FP: llilh [[INDEX:%r[1-5]]], 8
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; CHECK-FP: std %f8, 24([[INDEX]],%r11)
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; CHECK-FP: std %f9, 16({{%r[1-5]}},%r11)
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; CHECK-FP: std %f10, 8({{%r[1-5]}},%r11)
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; CHECK-FP: std %f11, 0({{%r[1-5]}},%r11)
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; CHECK-FP: stdy %f12, 524280(%r11)
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; CHECK-FP: stdy %f13, 524272(%r11)
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; CHECK-FP: stdy %f14, 524264(%r11)
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; CHECK-FP: stdy %f15, 524256(%r11)
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; CHECK-FP: .cfi_offset %f8, -168
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; CHECK-FP: .cfi_offset %f9, -176
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; CHECK-FP: .cfi_offset %f10, -184
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; CHECK-FP: .cfi_offset %f11, -192
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; CHECK-FP: .cfi_offset %f12, -200
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; CHECK-FP: .cfi_offset %f13, -208
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; CHECK-FP: .cfi_offset %f14, -216
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; CHECK-FP: .cfi_offset %f15, -224
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; ...main function body...
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; CHECK-FP: ld %f8, 24({{%r[1-5]}},%r11)
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; CHECK-FP: ld %f9, 16({{%r[1-5]}},%r11)
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; CHECK-FP: ld %f10, 8({{%r[1-5]}},%r11)
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; CHECK-FP: ld %f11, 0({{%r[1-5]}},%r11)
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; CHECK-FP: ldy %f12, 524280(%r11)
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; CHECK-FP: ldy %f13, 524272(%r11)
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; CHECK-FP: ldy %f14, 524264(%r11)
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; CHECK-FP: ldy %f15, 524256(%r11)
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; CHECK-FP: aghi %r11, 128
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; CHECK-FP: lmg %r11, %r15, 524280(%r11)
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; CHECK-FP: br %r14
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%y = alloca [65510 x i64], align 8
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%elem = getelementptr inbounds [65510 x i64], [65510 x i64]* %y, i64 0, i64 0
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store volatile i64 %x, i64* %elem
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%l0 = load volatile double, double *%ptr
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%l1 = load volatile double, double *%ptr
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%l2 = load volatile double, double *%ptr
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%l3 = load volatile double, double *%ptr
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%l4 = load volatile double, double *%ptr
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%l5 = load volatile double, double *%ptr
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%l6 = load volatile double, double *%ptr
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%l7 = load volatile double, double *%ptr
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%l8 = load volatile double, double *%ptr
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%l9 = load volatile double, double *%ptr
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%l10 = load volatile double, double *%ptr
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%l11 = load volatile double, double *%ptr
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%l12 = load volatile double, double *%ptr
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%l13 = load volatile double, double *%ptr
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%l14 = load volatile double, double *%ptr
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%l15 = load volatile double, double *%ptr
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%add0 = fadd double %l0, %l0
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%add1 = fadd double %l1, %add0
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%add2 = fadd double %l2, %add1
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%add3 = fadd double %l3, %add2
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%add4 = fadd double %l4, %add3
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%add5 = fadd double %l5, %add4
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%add6 = fadd double %l6, %add5
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%add7 = fadd double %l7, %add6
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%add8 = fadd double %l8, %add7
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%add9 = fadd double %l9, %add8
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%add10 = fadd double %l10, %add9
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%add11 = fadd double %l11, %add10
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%add12 = fadd double %l12, %add11
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%add13 = fadd double %l13, %add12
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%add14 = fadd double %l14, %add13
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%add15 = fadd double %l15, %add14
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store volatile double %add0, double *%ptr
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store volatile double %add1, double *%ptr
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store volatile double %add2, double *%ptr
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store volatile double %add3, double *%ptr
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store volatile double %add4, double *%ptr
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store volatile double %add5, double *%ptr
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store volatile double %add6, double *%ptr
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store volatile double %add7, double *%ptr
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store volatile double %add8, double *%ptr
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store volatile double %add9, double *%ptr
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store volatile double %add10, double *%ptr
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store volatile double %add11, double *%ptr
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store volatile double %add12, double *%ptr
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store volatile double %add13, double *%ptr
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store volatile double %add14, double *%ptr
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store volatile double %add15, double *%ptr
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ret void
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}
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