; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -verify-machineinstrs -mtriple=x86_64-unknown-unknown -disable-cgp-select2branch -x86-cmov-converter=false | 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 { ; CHECK-LABEL: test1: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: btl %esi, %edi ; CHECK-NEXT: movl $12, %eax ; CHECK-NEXT: cmovael (%rcx), %eax ; CHECK-NEXT: retq entry: %0 = lshr i32 %x, %n %1 = and i32 %0, 1 %toBool = icmp eq i32 %1, 0 %v = load i32, i32* %vp %.0 = select i1 %toBool, i32 %v, i32 12 ret i32 %.0 } define i32 @test2(i32 %x, i32 %n, i32 %w, i32* %vp) nounwind readnone { ; CHECK-LABEL: test2: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: btl %esi, %edi ; CHECK-NEXT: movl $12, %eax ; CHECK-NEXT: cmovbl (%rcx), %eax ; CHECK-NEXT: retq entry: %0 = lshr i32 %x, %n %1 = and i32 %0, 1 %toBool = icmp eq i32 %1, 0 %v = load i32, i32* %vp %.0 = select i1 %toBool, i32 12, i32 %v 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: # %bb.0: ; CHECK-NEXT: pushq %rax ; CHECK-NEXT: testb $1, %dl ; CHECK-NEXT: cmovel %esi, %edi ; CHECK-NEXT: callq bar ; CHECK-NEXT: popq %rax ; CHECK-NEXT: retq %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 @g_96 = external global i8 @g_100 = external global i8 @_2E_str = external constant [15 x i8], align 1 define i1 @test4() nounwind { ; CHECK-LABEL: test4: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: movsbl {{.*}}(%rip), %edx ; CHECK-NEXT: movl %edx, %eax ; CHECK-NEXT: shrb $7, %al ; CHECK-NEXT: movzbl %al, %ecx ; CHECK-NEXT: xorl $1, %ecx ; CHECK-NEXT: # kill: def %cl killed %cl killed %ecx ; CHECK-NEXT: sarl %cl, %edx ; CHECK-NEXT: movb {{.*}}(%rip), %al ; CHECK-NEXT: testb %al, %al ; CHECK-NEXT: je .LBB3_2 ; CHECK-NEXT: # %bb.1: # %bb.i.i.i ; CHECK-NEXT: movb {{.*}}(%rip), %cl ; CHECK-NEXT: .LBB3_2: # %func_4.exit.i ; CHECK-NEXT: pushq %rbx ; CHECK-NEXT: testb %dl, %dl ; CHECK-NEXT: setne %bl ; CHECK-NEXT: movl %eax, %ecx ; CHECK-NEXT: je .LBB3_4 ; CHECK-NEXT: # %bb.3: # %func_4.exit.i ; CHECK-NEXT: xorl %ecx, %ecx ; CHECK-NEXT: .LBB3_4: # %func_4.exit.i ; CHECK-NEXT: testb %al, %al ; CHECK-NEXT: je .LBB3_7 ; CHECK-NEXT: # %bb.5: # %func_4.exit.i ; CHECK-NEXT: testb %bl, %bl ; CHECK-NEXT: jne .LBB3_7 ; CHECK-NEXT: # %bb.6: # %bb.i.i ; CHECK-NEXT: movb {{.*}}(%rip), %cl ; CHECK-NEXT: xorl %ebx, %ebx ; CHECK-NEXT: movl %eax, %ecx ; CHECK-NEXT: .LBB3_7: # %func_1.exit ; CHECK-NEXT: movb %cl, {{.*}}(%rip) ; CHECK-NEXT: movzbl %cl, %esi ; CHECK-NEXT: movl $_2E_str, %edi ; CHECK-NEXT: xorl %eax, %eax ; CHECK-NEXT: callq printf ; CHECK-NEXT: movl %ebx, %eax ; CHECK-NEXT: popq %rbx ; CHECK-NEXT: retq entry: %0 = load i8, i8* @g_3, align 1 %1 = sext i8 %0 to i32 %.lobit.i = lshr i8 %0, 7 %tmp.i = zext i8 %.lobit.i to i32 %tmp.not.i = xor i32 %tmp.i, 1 %iftmp.17.0.i.i = ashr i32 %1, %tmp.not.i %retval56.i.i = trunc i32 %iftmp.17.0.i.i to i8 %2 = icmp eq i8 %retval56.i.i, 0 %g_96.promoted.i = load i8, i8* @g_96 %3 = icmp eq i8 %g_96.promoted.i, 0 br i1 %3, label %func_4.exit.i, label %bb.i.i.i bb.i.i.i: %4 = load volatile i8, i8* @g_100, align 1 br label %func_4.exit.i func_4.exit.i: %.not.i = xor i1 %2, true %brmerge.i = or i1 %3, %.not.i %.mux.i = select i1 %2, i8 %g_96.promoted.i, i8 0 br i1 %brmerge.i, label %func_1.exit, label %bb.i.i bb.i.i: %5 = load volatile i8, i8* @g_100, align 1 br label %func_1.exit func_1.exit: %g_96.tmp.0.i = phi i8 [ %g_96.promoted.i, %bb.i.i ], [ %.mux.i, %func_4.exit.i ] %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 %7 = tail call i32 (i8*, ...) @printf(i8* noalias getelementptr ([15 x i8], [15 x i8]* @_2E_str, i64 0, i64 0), i32 %6) nounwind ret i1 %ret } declare i32 @printf(i8* nocapture, ...) nounwind ; Should compile to setcc | -2. ; rdar://6668608 define i32 @test5(i32* nocapture %P) nounwind readonly { ; CHECK-LABEL: test5: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: xorl %eax, %eax ; CHECK-NEXT: cmpl $41, (%rdi) ; CHECK-NEXT: setg %al ; CHECK-NEXT: orl $-2, %eax ; CHECK-NEXT: retq entry: %0 = load i32, i32* %P, align 4 %1 = icmp sgt i32 %0, 41 %iftmp.0.0 = select i1 %1, i32 -1, i32 -2 ret i32 %iftmp.0.0 } define i32 @test6(i32* nocapture %P) nounwind readonly { ; CHECK-LABEL: test6: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: xorl %eax, %eax ; CHECK-NEXT: cmpl $42, (%rdi) ; CHECK-NEXT: setl %al ; CHECK-NEXT: leal 4(%rax,%rax,8), %eax ; CHECK-NEXT: retq entry: %0 = load i32, i32* %P, align 4 %1 = icmp sgt i32 %0, 41 %iftmp.0.0 = select i1 %1, i32 4, i32 13 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: # %bb.0: ; CHECK-NEXT: testb $1, %dil ; CHECK-NEXT: jne .LBB6_2 ; CHECK-NEXT: # %bb.1: ; CHECK-NEXT: movl %edx, %esi ; CHECK-NEXT: .LBB6_2: ; CHECK-NEXT: movl %esi, %eax ; CHECK-NEXT: retq %d = select i1 %c, i8 %a, i8 %b ret i8 %d } define i32 @smin(i32 %x) { ; CHECK-LABEL: smin: ; CHECK: # %bb.0: ; CHECK-NEXT: notl %edi ; CHECK-NEXT: testl %edi, %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 }