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merge some more cmov tests into cmov.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81823 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
5f52cf8bb7
commit
9f052ab161
@ -1,61 +0,0 @@
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; RUN: llc -march=x86-64 < %s | FileCheck %s
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; PR4814
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; CodeGen shouldn't try to do a setne after an expanded 8-bit conditional
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; move without recomputing EFLAGS, because the expansion of the conditional
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; move with control flow may clobber EFLAGS (e.g., with xor, to set the
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; register to zero).
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; The test is a little awkward; the important part is that there's a test before the
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; setne.
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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@g_3 = external global i8 ; <i8*> [#uses=1]
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@g_96 = external global i8 ; <i8*> [#uses=2]
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@g_100 = external global i8 ; <i8*> [#uses=2]
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@_2E_str = external constant [15 x i8], align 1 ; <[15 x i8]*> [#uses=1]
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define i32 @main() nounwind {
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entry:
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%0 = load i8* @g_3, align 1 ; <i8> [#uses=2]
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%1 = sext i8 %0 to i32 ; <i32> [#uses=1]
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%.lobit.i = lshr i8 %0, 7 ; <i8> [#uses=1]
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%tmp.i = zext i8 %.lobit.i to i32 ; <i32> [#uses=1]
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%tmp.not.i = xor i32 %tmp.i, 1 ; <i32> [#uses=1]
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%iftmp.17.0.i.i = ashr i32 %1, %tmp.not.i ; <i32> [#uses=1]
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%retval56.i.i = trunc i32 %iftmp.17.0.i.i to i8 ; <i8> [#uses=1]
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%2 = icmp eq i8 %retval56.i.i, 0 ; <i1> [#uses=2]
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%g_96.promoted.i = load i8* @g_96 ; <i8> [#uses=3]
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%3 = icmp eq i8 %g_96.promoted.i, 0 ; <i1> [#uses=2]
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br i1 %3, label %func_4.exit.i, label %bb.i.i.i
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bb.i.i.i: ; preds = %entry
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%4 = volatile load i8* @g_100, align 1 ; <i8> [#uses=0]
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br label %func_4.exit.i
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; CHECK: g_100
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; CHECK: testb
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; CHECK: testb %al, %al
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; CHECK-NEXT: setne %al
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; CHECK-NEXT: testb
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func_4.exit.i: ; preds = %bb.i.i.i, %entry
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%.not.i = xor i1 %2, true ; <i1> [#uses=1]
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%brmerge.i = or i1 %3, %.not.i ; <i1> [#uses=1]
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%.mux.i = select i1 %2, i8 %g_96.promoted.i, i8 0 ; <i8> [#uses=1]
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br i1 %brmerge.i, label %func_1.exit, label %bb.i.i
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bb.i.i: ; preds = %func_4.exit.i
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%5 = volatile load i8* @g_100, align 1 ; <i8> [#uses=0]
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br label %func_1.exit
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func_1.exit: ; preds = %bb.i.i, %func_4.exit.i
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%g_96.tmp.0.i = phi i8 [ %g_96.promoted.i, %bb.i.i ], [ %.mux.i, %func_4.exit.i ] ; <i8> [#uses=2]
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store i8 %g_96.tmp.0.i, i8* @g_96
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%6 = zext i8 %g_96.tmp.0.i to i32 ; <i32> [#uses=1]
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%7 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr ([15 x i8]* @_2E_str, i64 0, i64 0), i32 %6) nounwind ; <i32> [#uses=0]
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ret i32 0
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}
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declare i32 @printf(i8* nocapture, ...) nounwind
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@ -1,4 +1,5 @@
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; RUN: llc < %s -march=x86-64 | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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define i32 @test1(i32 %x, i32 %n, i32 %w, i32* %vp) nounwind readnone {
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entry:
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@ -46,3 +47,97 @@ define void @test3(i64 %a, i64 %b, i1 %p) nounwind {
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call void @bar(i64 %f)
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ret void
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}
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; CodeGen shouldn't try to do a setne after an expanded 8-bit conditional
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; move without recomputing EFLAGS, because the expansion of the conditional
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; move with control flow may clobber EFLAGS (e.g., with xor, to set the
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; register to zero).
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; The test is a little awkward; the important part is that there's a test before the
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; setne.
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; PR4814
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@g_3 = external global i8 ; <i8*> [#uses=1]
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@g_96 = external global i8 ; <i8*> [#uses=2]
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@g_100 = external global i8 ; <i8*> [#uses=2]
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@_2E_str = external constant [15 x i8], align 1 ; <[15 x i8]*> [#uses=1]
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define i32 @test4() nounwind {
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entry:
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%0 = load i8* @g_3, align 1 ; <i8> [#uses=2]
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%1 = sext i8 %0 to i32 ; <i32> [#uses=1]
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%.lobit.i = lshr i8 %0, 7 ; <i8> [#uses=1]
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%tmp.i = zext i8 %.lobit.i to i32 ; <i32> [#uses=1]
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%tmp.not.i = xor i32 %tmp.i, 1 ; <i32> [#uses=1]
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%iftmp.17.0.i.i = ashr i32 %1, %tmp.not.i ; <i32> [#uses=1]
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%retval56.i.i = trunc i32 %iftmp.17.0.i.i to i8 ; <i8> [#uses=1]
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%2 = icmp eq i8 %retval56.i.i, 0 ; <i1> [#uses=2]
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%g_96.promoted.i = load i8* @g_96 ; <i8> [#uses=3]
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%3 = icmp eq i8 %g_96.promoted.i, 0 ; <i1> [#uses=2]
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br i1 %3, label %func_4.exit.i, label %bb.i.i.i
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bb.i.i.i: ; preds = %entry
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%4 = volatile load i8* @g_100, align 1 ; <i8> [#uses=0]
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br label %func_4.exit.i
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; CHECK: test4:
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; CHECK: g_100
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; CHECK: testb
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; CHECK: testb %al, %al
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; CHECK-NEXT: setne %al
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; CHECK-NEXT: testb
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func_4.exit.i: ; preds = %bb.i.i.i, %entry
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%.not.i = xor i1 %2, true ; <i1> [#uses=1]
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%brmerge.i = or i1 %3, %.not.i ; <i1> [#uses=1]
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%.mux.i = select i1 %2, i8 %g_96.promoted.i, i8 0 ; <i8> [#uses=1]
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br i1 %brmerge.i, label %func_1.exit, label %bb.i.i
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bb.i.i: ; preds = %func_4.exit.i
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%5 = volatile load i8* @g_100, align 1 ; <i8> [#uses=0]
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br label %func_1.exit
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func_1.exit: ; preds = %bb.i.i, %func_4.exit.i
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%g_96.tmp.0.i = phi i8 [ %g_96.promoted.i, %bb.i.i ], [ %.mux.i, %func_4.exit.i ] ; <i8> [#uses=2]
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store i8 %g_96.tmp.0.i, i8* @g_96
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%6 = zext i8 %g_96.tmp.0.i to i32 ; <i32> [#uses=1]
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%7 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr ([15 x i8]* @_2E_str, i64 0, i64 0), i32 %6) nounwind ; <i32> [#uses=0]
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ret i32 0
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}
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declare i32 @printf(i8* nocapture, ...) nounwind
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; Should compile to setcc | -2.
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; rdar://6668608
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define i32 @test5(i32* nocapture %P) nounwind readonly {
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entry:
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; CHECK: test5:
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; CHECK: setg %al
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; CHECK: movzbl %al, %eax
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; CHECK: orl $-2, %eax
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; CHECK: ret
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%0 = load i32* %P, align 4 ; <i32> [#uses=1]
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%1 = icmp sgt i32 %0, 41 ; <i1> [#uses=1]
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%iftmp.0.0 = select i1 %1, i32 -1, i32 -2 ; <i32> [#uses=1]
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ret i32 %iftmp.0.0
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}
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define i32 @test6(i32* nocapture %P) nounwind readonly {
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entry:
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; CHECK: test6:
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; CHECK: setl %al
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; CHECK: movzbl %al, %eax
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; CHECK: leal 4(%rax,%rax,8), %eax
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; CHECK: ret
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%0 = load i32* %P, align 4 ; <i32> [#uses=1]
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%1 = icmp sgt i32 %0, 41 ; <i1> [#uses=1]
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%iftmp.0.0 = select i1 %1, i32 4, i32 13 ; <i32> [#uses=1]
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ret i32 %iftmp.0.0
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}
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@ -1,26 +0,0 @@
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; RUN: llc < %s | not grep cmov
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin7"
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; Should compile to setcc | -2.
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; rdar://6668608
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define i32 @test(i32* nocapture %P) nounwind readonly {
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entry:
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%0 = load i32* %P, align 4 ; <i32> [#uses=1]
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%1 = icmp sgt i32 %0, 41 ; <i1> [#uses=1]
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%iftmp.0.0 = select i1 %1, i32 -1, i32 -2 ; <i32> [#uses=1]
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ret i32 %iftmp.0.0
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}
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; setl %al
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; movzbl %al, %eax
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; leal 4(%eax,%eax,8), %eax
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define i32 @test2(i32* nocapture %P) nounwind readonly {
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entry:
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%0 = load i32* %P, align 4 ; <i32> [#uses=1]
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%1 = icmp sgt i32 %0, 41 ; <i1> [#uses=1]
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%iftmp.0.0 = select i1 %1, i32 4, i32 13 ; <i32> [#uses=1]
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ret i32 %iftmp.0.0
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}
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