100 lines
3.2 KiB
LLVM
100 lines
3.2 KiB
LLVM
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; Test strict extensions of f32 to f128.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare fp128 @llvm.experimental.constrained.fpext.f128.f32(float, metadata)
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; Check register extension.
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define void @f1(fp128 *%dst, float %val) #0 {
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; CHECK-LABEL: f1:
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; CHECK: lxebr %f0, %f0
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%res = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val,
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metadata !"fpexcept.strict") #0
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check the low end of the LXEB range.
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define void @f2(fp128 *%dst, float *%ptr) #0 {
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; CHECK-LABEL: f2:
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; CHECK: lxeb %f0, 0(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%val = load float, float *%ptr
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%res = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val,
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metadata !"fpexcept.strict") #0
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check the high end of the aligned LXEB range.
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define void @f3(fp128 *%dst, float *%base) #0 {
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; CHECK-LABEL: f3:
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; CHECK: lxeb %f0, 4092(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float, float *%base, i64 1023
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%val = load float, float *%ptr
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%res = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val,
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metadata !"fpexcept.strict") #0
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check the next word up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define void @f4(fp128 *%dst, float *%base) #0 {
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; CHECK-LABEL: f4:
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; CHECK: aghi %r3, 4096
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; CHECK: lxeb %f0, 0(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float, float *%base, i64 1024
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%val = load float, float *%ptr
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%res = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val,
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metadata !"fpexcept.strict") #0
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check negative displacements, which also need separate address logic.
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define void @f5(fp128 *%dst, float *%base) #0 {
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; CHECK-LABEL: f5:
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; CHECK: aghi %r3, -4
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; CHECK: lxeb %f0, 0(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float, float *%base, i64 -1
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%val = load float, float *%ptr
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%res = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val,
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metadata !"fpexcept.strict") #0
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check that LXEB allows indices.
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define void @f6(fp128 *%dst, float *%base, i64 %index) #0 {
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; CHECK-LABEL: f6:
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; CHECK: sllg %r1, %r4, 2
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; CHECK: lxeb %f0, 400(%r1,%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr1 = getelementptr float, float *%base, i64 %index
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%ptr2 = getelementptr float, float *%ptr1, i64 100
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%val = load float, float *%ptr2
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%res = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val,
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metadata !"fpexcept.strict") #0
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store fp128 %res, fp128 *%dst
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ret void
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}
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attributes #0 = { strictfp }
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