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Diffstat (limited to 'test/CodeGen/X86/cmov.ll')
| -rw-r--r-- | test/CodeGen/X86/cmov.ll | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/test/CodeGen/X86/cmov.ll b/test/CodeGen/X86/cmov.ll deleted file mode 100644 index d901f16e5c73..000000000000 --- a/test/CodeGen/X86/cmov.ll +++ /dev/null @@ -1,173 +0,0 @@ -; RUN: llc < %s -verify-machineinstrs -mtriple=x86_64-apple-darwin10 -disable-cgp-select2branch | FileCheck %s -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" - -define i32 @test1(i32 %x, i32 %n, i32 %w, i32* %vp) nounwind readnone { -entry: -; CHECK-LABEL: test1: -; CHECK: btl -; CHECK-NEXT: movl $12, %eax -; CHECK-NEXT: cmovael (%rcx), %eax -; CHECK-NEXT: ret - - %0 = lshr i32 %x, %n ; <i32> [#uses=1] - %1 = and i32 %0, 1 ; <i32> [#uses=1] - %toBool = icmp eq i32 %1, 0 ; <i1> [#uses=1] - %v = load i32, i32* %vp - %.0 = select i1 %toBool, i32 %v, i32 12 ; <i32> [#uses=1] - ret i32 %.0 -} -define i32 @test2(i32 %x, i32 %n, i32 %w, i32* %vp) nounwind readnone { -entry: -; CHECK-LABEL: test2: -; CHECK: btl -; CHECK-NEXT: movl $12, %eax -; CHECK-NEXT: cmovbl (%rcx), %eax -; CHECK-NEXT: ret - - %0 = lshr i32 %x, %n ; <i32> [#uses=1] - %1 = and i32 %0, 1 ; <i32> [#uses=1] - %toBool = icmp eq i32 %1, 0 ; <i1> [#uses=1] - %v = load i32, i32* %vp - %.0 = select i1 %toBool, i32 12, i32 %v ; <i32> [#uses=1] - ret i32 %.0 -} - - -; x86's 32-bit cmov zeroes the high 32 bits of the destination. Make -; sure CodeGen takes advantage of that to avoid an unnecessary -; zero-extend (movl) after the cmov. - -declare void @bar(i64) nounwind - -define void @test3(i64 %a, i64 %b, i1 %p) nounwind { -; CHECK-LABEL: test3: -; CHECK: cmov{{n?}}el %[[R1:e..]], %[[R2:e..]] -; CHECK-NOT: movl -; CHECK: call - - %c = trunc i64 %a to i32 - %d = trunc i64 %b to i32 - %e = select i1 %p, i32 %c, i32 %d - %f = zext i32 %e to i64 - call void @bar(i64 %f) - ret void -} - - - -; CodeGen shouldn't try to do a setne after an expanded 8-bit conditional -; move without recomputing EFLAGS, because the expansion of the conditional -; move with control flow may clobber EFLAGS (e.g., with xor, to set the -; register to zero). - -; The test is a little awkward; the important part is that there's a test before the -; setne. -; PR4814 - - -@g_3 = external global i8 ; <i8*> [#uses=1] -@g_96 = external global i8 ; <i8*> [#uses=2] -@g_100 = external global i8 ; <i8*> [#uses=2] -@_2E_str = external constant [15 x i8], align 1 ; <[15 x i8]*> [#uses=1] - -define i1 @test4() nounwind { -entry: - %0 = load i8, i8* @g_3, align 1 ; <i8> [#uses=2] - %1 = sext i8 %0 to i32 ; <i32> [#uses=1] - %.lobit.i = lshr i8 %0, 7 ; <i8> [#uses=1] - %tmp.i = zext i8 %.lobit.i to i32 ; <i32> [#uses=1] - %tmp.not.i = xor i32 %tmp.i, 1 ; <i32> [#uses=1] - %iftmp.17.0.i.i = ashr i32 %1, %tmp.not.i ; <i32> [#uses=1] - %retval56.i.i = trunc i32 %iftmp.17.0.i.i to i8 ; <i8> [#uses=1] - %2 = icmp eq i8 %retval56.i.i, 0 ; <i1> [#uses=2] - %g_96.promoted.i = load i8, i8* @g_96 ; <i8> [#uses=3] - %3 = icmp eq i8 %g_96.promoted.i, 0 ; <i1> [#uses=2] - br i1 %3, label %func_4.exit.i, label %bb.i.i.i - -bb.i.i.i: ; preds = %entry - %4 = load volatile i8, i8* @g_100, align 1 ; <i8> [#uses=0] - br label %func_4.exit.i - -; CHECK-LABEL: test4: -; CHECK: g_100 -; CHECK: testb -; CHECK-NOT: xor -; CHECK: setne -; CHECK: testb - -func_4.exit.i: ; preds = %bb.i.i.i, %entry - %.not.i = xor i1 %2, true ; <i1> [#uses=1] - %brmerge.i = or i1 %3, %.not.i ; <i1> [#uses=1] - %.mux.i = select i1 %2, i8 %g_96.promoted.i, i8 0 ; <i8> [#uses=1] - br i1 %brmerge.i, label %func_1.exit, label %bb.i.i - -bb.i.i: ; preds = %func_4.exit.i - %5 = load volatile i8, i8* @g_100, align 1 ; <i8> [#uses=0] - br label %func_1.exit - -func_1.exit: ; preds = %bb.i.i, %func_4.exit.i - %g_96.tmp.0.i = phi i8 [ %g_96.promoted.i, %bb.i.i ], [ %.mux.i, %func_4.exit.i ] ; <i8> [#uses=2] - %ret = phi i1 [ 0, %bb.i.i ], [ %.not.i, %func_4.exit.i ] - store i8 %g_96.tmp.0.i, i8* @g_96 - %6 = zext i8 %g_96.tmp.0.i to i32 ; <i32> [#uses=1] - %7 = tail call i32 (i8*, ...) @printf(i8* noalias getelementptr ([15 x i8], [15 x i8]* @_2E_str, i64 0, i64 0), i32 %6) nounwind ; <i32> [#uses=0] - ret i1 %ret -} - -declare i32 @printf(i8* nocapture, ...) nounwind - - -; Should compile to setcc | -2. -; rdar://6668608 -define i32 @test5(i32* nocapture %P) nounwind readonly { -entry: -; CHECK-LABEL: test5: -; CHECK: xorl %eax, %eax -; CHECK: setg %al -; CHECK: orl $-2, %eax -; CHECK: ret - - %0 = load i32, i32* %P, align 4 ; <i32> [#uses=1] - %1 = icmp sgt i32 %0, 41 ; <i1> [#uses=1] - %iftmp.0.0 = select i1 %1, i32 -1, i32 -2 ; <i32> [#uses=1] - ret i32 %iftmp.0.0 -} - -define i32 @test6(i32* nocapture %P) nounwind readonly { -entry: -; CHECK-LABEL: test6: -; CHECK: xorl %eax, %eax -; CHECK: setl %al -; CHECK: leal 4(%rax,%rax,8), %eax -; CHECK: ret - %0 = load i32, i32* %P, align 4 ; <i32> [#uses=1] - %1 = icmp sgt i32 %0, 41 ; <i1> [#uses=1] - %iftmp.0.0 = select i1 %1, i32 4, i32 13 ; <i32> [#uses=1] - ret i32 %iftmp.0.0 -} - - -; Don't try to use a 16-bit conditional move to do an 8-bit select, -; because it isn't worth it. Just use a branch instead. -define i8 @test7(i1 inreg %c, i8 inreg %a, i8 inreg %b) nounwind { -; CHECK-LABEL: test7: -; CHECK: testb $1, %dil -; CHECK-NEXT: jne LBB - - %d = select i1 %c, i8 %a, i8 %b - ret i8 %d -} - -define i32 @smin(i32 %x) { -; CHECK-LABEL: smin: -; CHECK: ## BB#0: -; CHECK-NEXT: xorl $-1, %edi -; CHECK-NEXT: movl $-1, %eax -; CHECK-NEXT: cmovsl %edi, %eax -; CHECK-NEXT: retq - %not_x = xor i32 %x, -1 - %1 = icmp slt i32 %not_x, -1 - %sel = select i1 %1, i32 %not_x, i32 -1 - ret i32 %sel -} - |