274 lines
7.7 KiB
LLVM
274 lines
7.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -verify-machineinstrs -mtriple=x86_64-unknown-unknown -disable-cgp-select2branch -x86-cmov-converter=false | 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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; CHECK-LABEL: test1:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: btl %esi, %edi
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; CHECK-NEXT: movl $12, %eax
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; CHECK-NEXT: cmovael (%rcx), %eax
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; CHECK-NEXT: retq
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entry:
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%0 = lshr i32 %x, %n
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%1 = and i32 %0, 1
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%toBool = icmp eq i32 %1, 0
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%v = load i32, i32* %vp
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%.0 = select i1 %toBool, i32 %v, i32 12
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ret i32 %.0
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}
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define i32 @test2(i32 %x, i32 %n, i32 %w, i32* %vp) nounwind readnone {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: btl %esi, %edi
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; CHECK-NEXT: movl $12, %eax
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; CHECK-NEXT: cmovbl (%rcx), %eax
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; CHECK-NEXT: retq
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entry:
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%0 = lshr i32 %x, %n
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%1 = and i32 %0, 1
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%toBool = icmp eq i32 %1, 0
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%v = load i32, i32* %vp
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%.0 = select i1 %toBool, i32 12, i32 %v
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ret i32 %.0
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}
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; x86's 32-bit cmov zeroes the high 32 bits of the destination. Make
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; sure CodeGen takes advantage of that to avoid an unnecessary
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; zero-extend (movl) after the cmov.
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declare void @bar(i64) nounwind
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define void @test3(i64 %a, i64 %b, i1 %p) nounwind {
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; CHECK-LABEL: test3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: testb $1, %dl
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; CHECK-NEXT: cmovel %esi, %edi
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; CHECK-NEXT: callq bar@PLT
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: retq
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%c = trunc i64 %a to i32
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%d = trunc i64 %b to i32
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%e = select i1 %p, i32 %c, i32 %d
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%f = zext i32 %e to i64
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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 dso_local global i8
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@g_96 = external dso_local global i8
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@g_100 = external dso_local global i8
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@_2E_str = external dso_local constant [15 x i8], align 1
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define i1 @test4() nounwind {
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; CHECK-LABEL: test4:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushq %rbx
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; CHECK-NEXT: movsbl g_3(%rip), %edx
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; CHECK-NEXT: movzbl %dl, %ecx
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; CHECK-NEXT: shrl $7, %ecx
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; CHECK-NEXT: xorb $1, %cl
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; CHECK-NEXT: # kill: def $cl killed $cl killed $ecx
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; CHECK-NEXT: sarl %cl, %edx
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; CHECK-NEXT: movb g_96(%rip), %al
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; CHECK-NEXT: testb %al, %al
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; CHECK-NEXT: je .LBB3_2
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; CHECK-NEXT: # %bb.1: # %bb.i.i.i
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; CHECK-NEXT: movb g_100(%rip), %cl
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; CHECK-NEXT: .LBB3_2: # %func_4.exit.i
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; CHECK-NEXT: xorl %esi, %esi
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; CHECK-NEXT: testb %dl, %dl
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; CHECK-NEXT: setne %bl
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; CHECK-NEXT: movzbl %al, %ecx
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; CHECK-NEXT: cmovnel %esi, %ecx
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; CHECK-NEXT: testb %al, %al
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; CHECK-NEXT: je .LBB3_5
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; CHECK-NEXT: # %bb.3: # %func_4.exit.i
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; CHECK-NEXT: testb %bl, %bl
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; CHECK-NEXT: jne .LBB3_5
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; CHECK-NEXT: # %bb.4: # %bb.i.i
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; CHECK-NEXT: movb g_100(%rip), %cl
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; CHECK-NEXT: xorl %ebx, %ebx
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; CHECK-NEXT: movl %eax, %ecx
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; CHECK-NEXT: .LBB3_5: # %func_1.exit
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; CHECK-NEXT: movb %cl, g_96(%rip)
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; CHECK-NEXT: movzbl %cl, %esi
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; CHECK-NEXT: movl $_2E_str, %edi
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: callq printf@PLT
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; CHECK-NEXT: movl %ebx, %eax
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: retq
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entry:
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%0 = load i8, i8* @g_3, align 1
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%1 = sext i8 %0 to i32
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%.lobit.i = lshr i8 %0, 7
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%tmp.i = zext i8 %.lobit.i to i32
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%tmp.not.i = xor i32 %tmp.i, 1
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%iftmp.17.0.i.i = ashr i32 %1, %tmp.not.i
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%retval56.i.i = trunc i32 %iftmp.17.0.i.i to i8
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%2 = icmp eq i8 %retval56.i.i, 0
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%g_96.promoted.i = load i8, i8* @g_96
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%3 = icmp eq i8 %g_96.promoted.i, 0
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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:
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%4 = load volatile i8, i8* @g_100, align 1
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br label %func_4.exit.i
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func_4.exit.i:
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%.not.i = xor i1 %2, true
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%brmerge.i = or i1 %3, %.not.i
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%.mux.i = select i1 %2, i8 %g_96.promoted.i, i8 0
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br i1 %brmerge.i, label %func_1.exit, label %bb.i.i
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bb.i.i:
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%5 = load volatile i8, i8* @g_100, align 1
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br label %func_1.exit
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func_1.exit:
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%g_96.tmp.0.i = phi i8 [ %g_96.promoted.i, %bb.i.i ], [ %.mux.i, %func_4.exit.i ]
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%ret = phi i1 [ 0, %bb.i.i ], [ %.not.i, %func_4.exit.i ]
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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
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%7 = tail call i32 (i8*, ...) @printf(i8* noalias getelementptr ([15 x i8], [15 x i8]* @_2E_str, i64 0, i64 0), i32 %6) nounwind
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ret i1 %ret
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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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; CHECK-LABEL: test5:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: cmpl $42, (%rdi)
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; CHECK-NEXT: setge %al
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; CHECK-NEXT: orl $-2, %eax
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; CHECK-NEXT: retq
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entry:
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%0 = load i32, i32* %P, align 4
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%1 = icmp sgt i32 %0, 41
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%iftmp.0.0 = select i1 %1, i32 -1, i32 -2
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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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; CHECK-LABEL: test6:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: cmpl $42, (%rdi)
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; CHECK-NEXT: setl %al
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; CHECK-NEXT: leal 4(%rax,%rax,8), %eax
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; CHECK-NEXT: retq
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entry:
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%0 = load i32, i32* %P, align 4
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%1 = icmp sgt i32 %0, 41
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%iftmp.0.0 = select i1 %1, i32 4, i32 13
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ret i32 %iftmp.0.0
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}
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define i8 @test7(i1 inreg %c, i8 inreg %a, i8 inreg %b) nounwind {
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; CHECK-LABEL: test7:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: testb $1, %dil
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; CHECK-NEXT: cmovel %edx, %eax
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; CHECK-NEXT: # kill: def $al killed $al killed $eax
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; CHECK-NEXT: retq
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%d = select i1 %c, i8 %a, i8 %b
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ret i8 %d
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}
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define i64 @test8(i64 %0, i64 %1, i64 %2) {
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; CHECK-LABEL: test8:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movq %rsi, %rax
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; CHECK-NEXT: cmpq $-2147483648, %rdi # imm = 0x80000000
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; CHECK-NEXT: cmovlq %rdx, %rax
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; CHECK-NEXT: retq
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%4 = icmp sgt i64 %0, -2147483649
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%5 = select i1 %4, i64 %1, i64 %2
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ret i64 %5
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}
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define i32 @smin(i32 %x) {
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; CHECK-LABEL: smin:
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; CHECK: # %bb.0:
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; CHECK-NEXT: notl %edi
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; CHECK-NEXT: testl %edi, %edi
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; CHECK-NEXT: movl $-1, %eax
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; CHECK-NEXT: cmovsl %edi, %eax
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; CHECK-NEXT: retq
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%not_x = xor i32 %x, -1
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%1 = icmp slt i32 %not_x, -1
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%sel = select i1 %1, i32 %not_x, i32 -1
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ret i32 %sel
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}
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define i32 @pr47049_1(i32 %0) {
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; CHECK-LABEL: pr47049_1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: testl %edi, %edi
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; CHECK-NEXT: movl $1, %eax
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; CHECK-NEXT: cmovlel %edi, %eax
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; CHECK-NEXT: retq
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%2 = icmp slt i32 %0, 1
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%3 = select i1 %2, i32 %0, i32 1
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ret i32 %3
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}
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define i32 @pr47049_2(i32 %0) {
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; CHECK-LABEL: pr47049_2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: testl %edi, %edi
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; CHECK-NEXT: movl $-1, %eax
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; CHECK-NEXT: cmovnsl %edi, %eax
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; CHECK-NEXT: retq
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%2 = icmp sgt i32 %0, -1
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%3 = select i1 %2, i32 %0, i32 -1
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ret i32 %3
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}
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define i32 @pr47049_3(i32 %0) {
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; CHECK-LABEL: pr47049_3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: testl %edi, %edi
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; CHECK-NEXT: movl $1, %eax
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; CHECK-NEXT: cmovgl %edi, %eax
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; CHECK-NEXT: retq
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%2 = icmp sgt i32 %0, 1
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%3 = select i1 %2, i32 %0, i32 1
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ret i32 %3
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}
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define i32 @pr47049_4(i32 %0) {
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; CHECK-LABEL: pr47049_4:
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; CHECK: # %bb.0:
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; CHECK-NEXT: testl %edi, %edi
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; CHECK-NEXT: movl $1, %eax
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; CHECK-NEXT: cmovnel %edi, %eax
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; CHECK-NEXT: retq
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%2 = icmp ugt i32 %0, 1
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%3 = select i1 %2, i32 %0, i32 1
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ret i32 %3
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}
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