225 lines
6.5 KiB
LLVM
225 lines
6.5 KiB
LLVM
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; Test LOCFHR and LOCHHI.
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; See comments in asm-18.ll about testing high-word operations.
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;
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; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu -mcpu=z13 \
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; RUN: -no-integrated-as | FileCheck %s
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;
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; Run the test again to make sure it still works the same even
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; in the presence of the select instructions.
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; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu -mcpu=z15 \
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; RUN: -no-integrated-as | FileCheck %s
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define void @f1(i32 %limit) {
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; CHECK-LABEL: f1:
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; CHECK-DAG: stepa [[REG1:%r[0-5]]]
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; CHECK-DAG: stepb [[REG2:%r[0-5]]]
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; CHECK-DAG: clfi %r2, 42
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; CHECK: locfhrhe [[REG1]], [[REG2]]
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; CHECK: stepc [[REG1]]
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; CHECK: br %r14
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%a = call i32 asm sideeffect "stepa $0", "=h"()
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%b = call i32 asm sideeffect "stepb $0", "=h"()
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%cond = icmp ult i32 %limit, 42
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%res = select i1 %cond, i32 %a, i32 %b
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call void asm sideeffect "stepc $0", "h"(i32 %res)
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call void asm sideeffect "use $0", "h"(i32 %b)
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ret void
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}
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define void @f2(i32 %limit) {
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; CHECK-LABEL: f2:
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; CHECK-DAG: stepa [[REG1:%r[0-5]]]
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; CHECK-DAG: stepb [[REG2:%r[0-5]]]
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; CHECK-DAG: clijl %r2, 42, [[LABEL:.LBB[0-9_]+]]
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; CHECK: risbhg [[REG1]], [[REG2]], 0, 159, 32
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; CHECK: [[LABEL]]
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; CHECK: stepc [[REG1]]
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; CHECK: br %r14
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%dummy = call i32 asm sideeffect "dummy $0", "=h"()
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%a = call i32 asm sideeffect "stepa $0", "=h"()
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%b = call i32 asm sideeffect "stepb $0", "=r"()
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%cond = icmp ult i32 %limit, 42
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%res = select i1 %cond, i32 %a, i32 %b
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call void asm sideeffect "stepc $0", "h"(i32 %res)
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call void asm sideeffect "dummy $0", "h"(i32 %dummy)
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call void asm sideeffect "use $0", "r"(i32 %b)
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ret void
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}
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define void @f3(i32 %limit) {
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; CHECK-LABEL: f3:
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; CHECK-DAG: stepa [[REG1:%r[0-5]]]
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; CHECK-DAG: stepb [[REG2:%r[0-5]]]
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; CHECK-DAG: clijhe %r2, 42, [[LABEL:.LBB[0-9_]+]]
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; CHECK: risbhg [[REG2]], [[REG1]], 0, 159, 32
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; CHECK: [[LABEL]]
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; CHECK: stepc [[REG2]]
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; CHECK: br %r14
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%dummy = call i32 asm sideeffect "dummy $0", "=h"()
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%a = call i32 asm sideeffect "stepa $0", "=r"()
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%b = call i32 asm sideeffect "stepb $0", "=h"()
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%cond = icmp ult i32 %limit, 42
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%res = select i1 %cond, i32 %a, i32 %b
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call void asm sideeffect "stepc $0", "h"(i32 %res)
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call void asm sideeffect "dummy $0", "h"(i32 %dummy)
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call void asm sideeffect "use $0", "r"(i32 %a)
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ret void
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}
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define void @f4(i32 %limit) {
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; CHECK-LABEL: f4:
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; CHECK-DAG: stepa [[REG1:%r[0-5]]]
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; CHECK-DAG: stepb [[REG2:%r[0-5]]]
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; CHECK-DAG: clijl %r2, 42, [[LABEL:.LBB[0-9_]+]]
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; CHECK: risblg [[REG1]], [[REG2]], 0, 159, 32
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; CHECK: [[LABEL]]
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; CHECK: stepc [[REG1]]
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; CHECK: br %r14
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%dummy = call i32 asm sideeffect "dummy $0", "=h"()
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%a = call i32 asm sideeffect "stepa $0", "=r"()
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%b = call i32 asm sideeffect "stepb $0", "=h"()
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%cond = icmp ult i32 %limit, 42
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%res = select i1 %cond, i32 %a, i32 %b
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call void asm sideeffect "stepc $0", "r"(i32 %res)
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call void asm sideeffect "dummy $0", "h"(i32 %dummy)
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call void asm sideeffect "use $0", "h"(i32 %b)
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ret void
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}
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define void @f5(i32 %limit) {
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; CHECK-LABEL: f5:
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; CHECK-DAG: stepa [[REG2:%r[0-5]]]
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; CHECK-DAG: stepb [[REG1:%r[0-5]]]
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; CHECK-DAG: clijhe %r2, 42, [[LABEL:.LBB[0-9_]+]]
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; CHECK: risblg [[REG1]], [[REG2]], 0, 159, 32
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; CHECK: [[LABEL]]
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; CHECK: stepc [[REG1]]
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; CHECK: br %r14
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%dummy = call i32 asm sideeffect "dummy $0", "=h"()
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%a = call i32 asm sideeffect "stepa $0", "=h"()
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%b = call i32 asm sideeffect "stepb $0", "=r"()
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%cond = icmp ult i32 %limit, 42
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%res = select i1 %cond, i32 %a, i32 %b
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call void asm sideeffect "stepc $0", "r"(i32 %res)
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call void asm sideeffect "dummy $0", "h"(i32 %dummy)
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ret void
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}
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; Check that we also get LOCFHR as a result of early if-conversion.
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define void @f6(i32 %limit) {
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; CHECK-LABEL: f6:
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; CHECK-DAG: stepa [[REG1:%r[0-5]]]
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; CHECK-DAG: stepb [[REG2:%r[0-5]]]
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; CHECK-DAG: clfi %r2, 41
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; CHECK: locfhrh [[REG1]], [[REG2]]
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; CHECK: stepc [[REG1]]
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; CHECK: br %r14
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entry:
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%a = call i32 asm sideeffect "stepa $0", "=h"()
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%b = call i32 asm sideeffect "stepb $0", "=h"()
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%cond = icmp ult i32 %limit, 42
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br i1 %cond, label %if.then, label %return
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if.then:
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br label %return
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return:
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%res = phi i32 [ %a, %if.then ], [ %b, %entry ]
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call void asm sideeffect "stepc $0", "h"(i32 %res)
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call void asm sideeffect "use $0", "h"(i32 %b)
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ret void
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}
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; Check that inverting the condition works as well.
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define void @f7(i32 %limit) {
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; CHECK-LABEL: f7:
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; CHECK-DAG: stepa [[REG1:%r[0-5]]]
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; CHECK-DAG: stepb [[REG2:%r[0-5]]]
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; CHECK-DAG: clfi %r2, 41
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; CHECK: locfhrle [[REG1]], [[REG2]]
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; CHECK: stepc [[REG1]]
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; CHECK: br %r14
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entry:
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%a = call i32 asm sideeffect "stepa $0", "=h"()
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%b = call i32 asm sideeffect "stepb $0", "=h"()
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%cond = icmp ult i32 %limit, 42
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br i1 %cond, label %if.then, label %return
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if.then:
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br label %return
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return:
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%res = phi i32 [ %b, %if.then ], [ %a, %entry ]
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call void asm sideeffect "stepc $0", "h"(i32 %res)
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call void asm sideeffect "use $0", "h"(i32 %b)
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ret void
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}
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define void @f8(i32 %limit) {
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; CHECK-LABEL: f8:
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; CHECK: clfi %r2, 42
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; CHECK: lochhil [[REG:%r[0-5]]], 32767
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; CHECK: stepa [[REG]]
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%res = select i1 %cond, i32 32767, i32 0
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call void asm sideeffect "stepa $0", "h"(i32 %res)
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ret void
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}
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define void @f9(i32 %limit) {
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; CHECK-LABEL: f9:
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; CHECK: clfi %r2, 42
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; CHECK: lochhil [[REG:%r[0-5]]], -32768
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; CHECK: stepa [[REG]]
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 42
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%res = select i1 %cond, i32 -32768, i32 0
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call void asm sideeffect "stepa $0", "h"(i32 %res)
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ret void
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}
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; Check that we also get LOCHHI as a result of early if-conversion.
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define void @f10(i32 %limit) {
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; CHECK-LABEL: f10:
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; CHECK-DAG: stepa [[REG:%r[0-5]]]
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; CHECK-DAG: clfi %r2, 41
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; CHECK: lochhile [[REG]], 123
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; CHECK: stepb [[REG]]
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; CHECK: br %r14
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entry:
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%a = call i32 asm sideeffect "stepa $0", "=h"()
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%cond = icmp ult i32 %limit, 42
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br i1 %cond, label %if.then, label %return
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if.then:
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br label %return
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return:
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%res = phi i32 [ 123, %if.then ], [ %a, %entry ]
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call void asm sideeffect "stepb $0", "h"(i32 %res)
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ret void
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}
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; Check that inverting the condition works as well.
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define void @f11(i32 %limit) {
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; CHECK-LABEL: f11:
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; CHECK-DAG: stepa [[REG:%r[0-5]]]
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; CHECK-DAG: clfi %r2, 41
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; CHECK: lochhih [[REG]], 123
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; CHECK: stepb [[REG]]
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; CHECK: br %r14
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entry:
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%a = call i32 asm sideeffect "stepa $0", "=h"()
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%cond = icmp ult i32 %limit, 42
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br i1 %cond, label %if.then, label %return
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if.then:
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br label %return
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return:
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%res = phi i32 [ %a, %if.then ], [ 123, %entry ]
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call void asm sideeffect "stepb $0", "h"(i32 %res)
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ret void
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}
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