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llvm-mirror/test/CodeGen/X86/select.ll
Asaf Badouh 622b64c1f4 DAGCombiner: fix combine of trunc and select 
bugzilla:
https://llvm.org/bugs/show_bug.cgi?id=29002
pr29002

Differential Revision: https://reviews.llvm.org/D26449


 

llvm-svn: 286938
2016-11-15 07:55:22 +00:00

638 lines
18 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-apple-darwin10 -mcpu=generic | FileCheck %s --check-prefix=CHECK --check-prefix=GENERIC
; RUN: llc < %s -mtriple=x86_64-apple-darwin10 -mcpu=atom | FileCheck %s --check-prefix=CHECK --check-prefix=ATOM
; PR5757
%0 = type { i64, i32 }
define i32 @test1(%0* %p, %0* %q, i1 %r) nounwind {
; CHECK-LABEL: test1:
; CHECK: ## BB#0:
; CHECK-NEXT: addq $8, %rdi
; CHECK-NEXT: addq $8, %rsi
; CHECK-NEXT: testb $1, %dl
; CHECK-NEXT: cmovneq %rdi, %rsi
; CHECK-NEXT: movl (%rsi), %eax
; CHECK-NEXT: retq
%t0 = load %0, %0* %p
%t1 = load %0, %0* %q
%t4 = select i1 %r, %0 %t0, %0 %t1
%t5 = extractvalue %0 %t4, 1
ret i32 %t5
}
; PR2139
define i32 @test2() nounwind {
; CHECK-LABEL: test2:
; CHECK: ## BB#0: ## %entry
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: callq _return_false
; CHECK-NEXT: xorl %ecx, %ecx
; CHECK-NEXT: testb $1, %al
; CHECK-NEXT: movw $-480, %ax ## imm = 0xFE20
; CHECK-NEXT: cmovnew %cx, %ax
; CHECK-NEXT: cwtl
; CHECK-NEXT: shll $3, %eax
; CHECK-NEXT: cmpl $32768, %eax ## imm = 0x8000
; CHECK-NEXT: jge LBB1_1
; CHECK-NEXT: ## BB#2: ## %bb91
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: popq %rcx
; CHECK-NEXT: retq
; CHECK-NEXT: LBB1_1: ## %bb90
entry:
%tmp73 = tail call i1 @return_false()
%g.0 = select i1 %tmp73, i16 0, i16 -480
%tmp7778 = sext i16 %g.0 to i32
%tmp80 = shl i32 %tmp7778, 3
%tmp87 = icmp sgt i32 %tmp80, 32767
br i1 %tmp87, label %bb90, label %bb91
bb90:
unreachable
bb91:
ret i32 0
}
declare i1 @return_false()
;; Select between two floating point constants.
define float @test3(i32 %x) nounwind readnone {
; CHECK-LABEL: test3:
; CHECK: ## BB#0: ## %entry
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: sete %al
; CHECK-NEXT: leaq {{.*}}(%rip), %rcx
; CHECK-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
; CHECK-NEXT: retq
entry:
%0 = icmp eq i32 %x, 0
%iftmp.0.0 = select i1 %0, float 4.200000e+01, float 2.300000e+01
ret float %iftmp.0.0
}
define signext i8 @test4(i8* nocapture %P, double %F) nounwind readonly {
; CHECK-LABEL: test4:
; CHECK: ## BB#0: ## %entry
; CHECK-NEXT: movsd {{.*#+}} xmm1 = mem[0],zero
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: ucomisd %xmm0, %xmm1
; CHECK-NEXT: seta %al
; CHECK-NEXT: movsbl (%rdi,%rax,4), %eax
; CHECK-NEXT: retq
entry:
%0 = fcmp olt double %F, 4.200000e+01
%iftmp.0.0 = select i1 %0, i32 4, i32 0
%1 = getelementptr i8, i8* %P, i32 %iftmp.0.0
%2 = load i8, i8* %1, align 1
ret i8 %2
}
define void @test5(i1 %c, <2 x i16> %a, <2 x i16> %b, <2 x i16>* %p) nounwind {
; CHECK-LABEL: test5:
; CHECK: ## BB#0:
; CHECK-NEXT: testb $1, %dil
; CHECK-NEXT: jne LBB4_2
; CHECK-NEXT: ## BB#1:
; CHECK-NEXT: movdqa %xmm1, %xmm0
; CHECK-NEXT: LBB4_2:
; CHECK-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; CHECK-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
; CHECK-NEXT: movd %xmm0, (%rsi)
; CHECK-NEXT: retq
%x = select i1 %c, <2 x i16> %a, <2 x i16> %b
store <2 x i16> %x, <2 x i16>* %p
ret void
}
; Verify that the fmul gets sunk into the one part of the diamond where it is needed.
define void @test6(i32 %C, <4 x float>* %A, <4 x float>* %B) nounwind {
; CHECK-LABEL: test6:
; CHECK: ## BB#0:
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: je LBB5_1
; CHECK-NEXT: ## BB#2:
; CHECK-NEXT: movaps (%rsi), %xmm0
; CHECK-NEXT: movaps %xmm0, (%rsi)
; CHECK-NEXT: retq
; CHECK-NEXT: LBB5_1:
; CHECK-NEXT: movaps (%rdx), %xmm0
; CHECK-NEXT: mulps %xmm0, %xmm0
; CHECK-NEXT: movaps %xmm0, (%rsi)
; CHECK-NEXT: retq
%tmp = load <4 x float>, <4 x float>* %A
%tmp3 = load <4 x float>, <4 x float>* %B
%tmp9 = fmul <4 x float> %tmp3, %tmp3
%tmp.upgrd.1 = icmp eq i32 %C, 0
%iftmp.38.0 = select i1 %tmp.upgrd.1, <4 x float> %tmp9, <4 x float> %tmp
store <4 x float> %iftmp.38.0, <4 x float>* %A
ret void
}
; Select with fp80's
define x86_fp80 @test7(i32 %tmp8) nounwind {
; CHECK-LABEL: test7:
; CHECK: ## BB#0:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: setns %al
; CHECK-NEXT: shlq $4, %rax
; CHECK-NEXT: leaq {{.*}}(%rip), %rcx
; CHECK-NEXT: fldt (%rax,%rcx)
; CHECK-NEXT: retq
%tmp9 = icmp sgt i32 %tmp8, -1
%retval = select i1 %tmp9, x86_fp80 0xK4005B400000000000000, x86_fp80 0xK40078700000000000000
ret x86_fp80 %retval
}
; widening select v6i32 and then a sub
define void @test8(i1 %c, <6 x i32>* %dst.addr, <6 x i32> %src1,<6 x i32> %src2) nounwind {
; GENERIC-LABEL: test8:
; GENERIC: ## BB#0:
; GENERIC-NEXT: andb $1, %dil
; GENERIC-NEXT: jne LBB7_1
; GENERIC-NEXT: ## BB#2:
; GENERIC-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
; GENERIC-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
; GENERIC-NEXT: jmp LBB7_3
; GENERIC-NEXT: LBB7_1:
; GENERIC-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
; GENERIC-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
; GENERIC-NEXT: LBB7_3:
; GENERIC-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
; GENERIC-NEXT: testb %dil, %dil
; GENERIC-NEXT: jne LBB7_4
; GENERIC-NEXT: ## BB#5:
; GENERIC-NEXT: movd {{.*#+}} xmm2 = mem[0],zero,zero,zero
; GENERIC-NEXT: movd {{.*#+}} xmm3 = mem[0],zero,zero,zero
; GENERIC-NEXT: movd {{.*#+}} xmm4 = mem[0],zero,zero,zero
; GENERIC-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
; GENERIC-NEXT: jmp LBB7_6
; GENERIC-NEXT: LBB7_4:
; GENERIC-NEXT: movd %r9d, %xmm2
; GENERIC-NEXT: movd %ecx, %xmm3
; GENERIC-NEXT: movd %r8d, %xmm4
; GENERIC-NEXT: movd %edx, %xmm1
; GENERIC-NEXT: LBB7_6:
; GENERIC-NEXT: punpckldq {{.*#+}} xmm3 = xmm3[0],xmm2[0],xmm3[1],xmm2[1]
; GENERIC-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm4[0],xmm1[1],xmm4[1]
; GENERIC-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm3[0],xmm1[1],xmm3[1]
; GENERIC-NEXT: psubd {{.*}}(%rip), %xmm1
; GENERIC-NEXT: psubd {{.*}}(%rip), %xmm0
; GENERIC-NEXT: movq %xmm0, 16(%rsi)
; GENERIC-NEXT: movdqa %xmm1, (%rsi)
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test8:
; ATOM: ## BB#0:
; ATOM-NEXT: andb $1, %dil
; ATOM-NEXT: jne LBB7_1
; ATOM-NEXT: ## BB#2:
; ATOM-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
; ATOM-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
; ATOM-NEXT: jmp LBB7_3
; ATOM-NEXT: LBB7_1:
; ATOM-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
; ATOM-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
; ATOM-NEXT: LBB7_3:
; ATOM-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
; ATOM-NEXT: testb %dil, %dil
; ATOM-NEXT: jne LBB7_4
; ATOM-NEXT: ## BB#5:
; ATOM-NEXT: movd {{.*#+}} xmm2 = mem[0],zero,zero,zero
; ATOM-NEXT: movd {{.*#+}} xmm3 = mem[0],zero,zero,zero
; ATOM-NEXT: movd {{.*#+}} xmm4 = mem[0],zero,zero,zero
; ATOM-NEXT: movd {{.*#+}} xmm1 = mem[0],zero,zero,zero
; ATOM-NEXT: jmp LBB7_6
; ATOM-NEXT: LBB7_4:
; ATOM-NEXT: movd %r9d, %xmm2
; ATOM-NEXT: movd %ecx, %xmm3
; ATOM-NEXT: movd %r8d, %xmm4
; ATOM-NEXT: movd %edx, %xmm1
; ATOM-NEXT: LBB7_6:
; ATOM-NEXT: punpckldq {{.*#+}} xmm3 = xmm3[0],xmm2[0],xmm3[1],xmm2[1]
; ATOM-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm4[0],xmm1[1],xmm4[1]
; ATOM-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm3[0],xmm1[1],xmm3[1]
; ATOM-NEXT: psubd {{.*}}(%rip), %xmm0
; ATOM-NEXT: psubd {{.*}}(%rip), %xmm1
; ATOM-NEXT: movq %xmm0, 16(%rsi)
; ATOM-NEXT: movdqa %xmm1, (%rsi)
; ATOM-NEXT: retq
%x = select i1 %c, <6 x i32> %src1, <6 x i32> %src2
%val = sub <6 x i32> %x, < i32 1, i32 1, i32 1, i32 1, i32 1, i32 1 >
store <6 x i32> %val, <6 x i32>* %dst.addr
ret void
}
;; Test integer select between values and constants.
define i64 @test9(i64 %x, i64 %y) nounwind readnone ssp noredzone {
; GENERIC-LABEL: test9:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpq $1, %rdi
; GENERIC-NEXT: sbbq %rax, %rax
; GENERIC-NEXT: orq %rsi, %rax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test9:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpq $1, %rdi
; ATOM-NEXT: sbbq %rax, %rax
; ATOM-NEXT: orq %rsi, %rax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
%cmp = icmp ne i64 %x, 0
%cond = select i1 %cmp, i64 %y, i64 -1
ret i64 %cond
}
;; Same as test9
define i64 @test9a(i64 %x, i64 %y) nounwind readnone ssp noredzone {
; GENERIC-LABEL: test9a:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpq $1, %rdi
; GENERIC-NEXT: sbbq %rax, %rax
; GENERIC-NEXT: orq %rsi, %rax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test9a:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpq $1, %rdi
; ATOM-NEXT: sbbq %rax, %rax
; ATOM-NEXT: orq %rsi, %rax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
%cmp = icmp eq i64 %x, 0
%cond = select i1 %cmp, i64 -1, i64 %y
ret i64 %cond
}
define i64 @test9b(i64 %x, i64 %y) nounwind readnone ssp noredzone {
; GENERIC-LABEL: test9b:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpq $1, %rdi
; GENERIC-NEXT: sbbq %rax, %rax
; GENERIC-NEXT: orq %rsi, %rax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test9b:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpq $1, %rdi
; ATOM-NEXT: sbbq %rax, %rax
; ATOM-NEXT: orq %rsi, %rax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
%cmp = icmp eq i64 %x, 0
%A = sext i1 %cmp to i64
%cond = or i64 %y, %A
ret i64 %cond
}
;; Select between -1 and 1.
define i64 @test10(i64 %x, i64 %y) nounwind readnone ssp noredzone {
; GENERIC-LABEL: test10:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpq $1, %rdi
; GENERIC-NEXT: sbbq %rax, %rax
; GENERIC-NEXT: orq $1, %rax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test10:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpq $1, %rdi
; ATOM-NEXT: sbbq %rax, %rax
; ATOM-NEXT: orq $1, %rax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
%cmp = icmp eq i64 %x, 0
%cond = select i1 %cmp, i64 -1, i64 1
ret i64 %cond
}
define i64 @test11(i64 %x, i64 %y) nounwind readnone ssp noredzone {
; CHECK-LABEL: test11:
; CHECK: ## BB#0:
; CHECK-NEXT: cmpq $1, %rdi
; CHECK-NEXT: sbbq %rax, %rax
; CHECK-NEXT: notq %rax
; CHECK-NEXT: orq %rsi, %rax
; CHECK-NEXT: retq
%cmp = icmp eq i64 %x, 0
%cond = select i1 %cmp, i64 %y, i64 -1
ret i64 %cond
}
define i64 @test11a(i64 %x, i64 %y) nounwind readnone ssp noredzone {
; CHECK-LABEL: test11a:
; CHECK: ## BB#0:
; CHECK-NEXT: cmpq $1, %rdi
; CHECK-NEXT: sbbq %rax, %rax
; CHECK-NEXT: notq %rax
; CHECK-NEXT: orq %rsi, %rax
; CHECK-NEXT: retq
%cmp = icmp ne i64 %x, 0
%cond = select i1 %cmp, i64 -1, i64 %y
ret i64 %cond
}
declare noalias i8* @_Znam(i64) noredzone
define noalias i8* @test12(i64 %count) nounwind ssp noredzone {
; GENERIC-LABEL: test12:
; GENERIC: ## BB#0: ## %entry
; GENERIC-NEXT: movl $4, %ecx
; GENERIC-NEXT: movq %rdi, %rax
; GENERIC-NEXT: mulq %rcx
; GENERIC-NEXT: movq $-1, %rdi
; GENERIC-NEXT: cmovnoq %rax, %rdi
; GENERIC-NEXT: jmp __Znam ## TAILCALL
;
; ATOM-LABEL: test12:
; ATOM: ## BB#0: ## %entry
; ATOM-NEXT: movq %rdi, %rax
; ATOM-NEXT: movl $4, %ecx
; ATOM-NEXT: mulq %rcx
; ATOM-NEXT: movq $-1, %rdi
; ATOM-NEXT: cmovnoq %rax, %rdi
; ATOM-NEXT: jmp __Znam ## TAILCALL
entry:
%A = tail call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %count, i64 4)
%B = extractvalue { i64, i1 } %A, 1
%C = extractvalue { i64, i1 } %A, 0
%D = select i1 %B, i64 -1, i64 %C
%call = tail call noalias i8* @_Znam(i64 %D) nounwind noredzone
ret i8* %call
}
declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64) nounwind readnone
define i32 @test13(i32 %a, i32 %b) nounwind {
; GENERIC-LABEL: test13:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpl %esi, %edi
; GENERIC-NEXT: sbbl %eax, %eax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test13:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpl %esi, %edi
; ATOM-NEXT: sbbl %eax, %eax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
%c = icmp ult i32 %a, %b
%d = sext i1 %c to i32
ret i32 %d
}
define i32 @test14(i32 %a, i32 %b) nounwind {
; GENERIC-LABEL: test14:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpl %esi, %edi
; GENERIC-NEXT: sbbl %eax, %eax
; GENERIC-NEXT: notl %eax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test14:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpl %esi, %edi
; ATOM-NEXT: sbbl %eax, %eax
; ATOM-NEXT: notl %eax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
%c = icmp uge i32 %a, %b
%d = sext i1 %c to i32
ret i32 %d
}
; rdar://10961709
define i32 @test15(i32 %x) nounwind {
; GENERIC-LABEL: test15:
; GENERIC: ## BB#0: ## %entry
; GENERIC-NEXT: negl %edi
; GENERIC-NEXT: sbbl %eax, %eax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test15:
; ATOM: ## BB#0: ## %entry
; ATOM-NEXT: negl %edi
; ATOM-NEXT: sbbl %eax, %eax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
entry:
%cmp = icmp ne i32 %x, 0
%sub = sext i1 %cmp to i32
ret i32 %sub
}
define i64 @test16(i64 %x) nounwind uwtable readnone ssp {
; GENERIC-LABEL: test16:
; GENERIC: ## BB#0: ## %entry
; GENERIC-NEXT: negq %rdi
; GENERIC-NEXT: sbbq %rax, %rax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test16:
; ATOM: ## BB#0: ## %entry
; ATOM-NEXT: negq %rdi
; ATOM-NEXT: sbbq %rax, %rax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
entry:
%cmp = icmp ne i64 %x, 0
%conv1 = sext i1 %cmp to i64
ret i64 %conv1
}
define i16 @test17(i16 %x) nounwind {
; GENERIC-LABEL: test17:
; GENERIC: ## BB#0: ## %entry
; GENERIC-NEXT: negw %di
; GENERIC-NEXT: sbbw %ax, %ax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test17:
; ATOM: ## BB#0: ## %entry
; ATOM-NEXT: negw %di
; ATOM-NEXT: sbbw %ax, %ax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
entry:
%cmp = icmp ne i16 %x, 0
%sub = sext i1 %cmp to i16
ret i16 %sub
}
define i8 @test18(i32 %x, i8 zeroext %a, i8 zeroext %b) nounwind {
; GENERIC-LABEL: test18:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpl $15, %edi
; GENERIC-NEXT: cmovgel %edx, %esi
; GENERIC-NEXT: movl %esi, %eax
; GENERIC-NEXT: retq
;
; ATOM-LABEL: test18:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpl $15, %edi
; ATOM-NEXT: cmovgel %edx, %esi
; ATOM-NEXT: movl %esi, %eax
; ATOM-NEXT: nop
; ATOM-NEXT: nop
; ATOM-NEXT: retq
%cmp = icmp slt i32 %x, 15
%sel = select i1 %cmp, i8 %a, i8 %b
ret i8 %sel
}
define i32 @trunc_select_miscompile(i32 %a, i1 zeroext %cc) {
; CHECK-LABEL: trunc_select_miscompile:
; CHECK: ## BB#0:
; CHECK-NEXT: orb $2, %sil
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: shll %cl, %edi
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: retq
%tmp1 = select i1 %cc, i32 3, i32 2
%tmp2 = shl i32 %a, %tmp1
ret i32 %tmp2
}
; reproducer for pr29002
define void @clamp_i8(i32 %src, i8* %dst) {
; GENERIC-LABEL: clamp_i8:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpl $127, %edi
; GENERIC-NEXT: movl $127, %eax
; GENERIC-NEXT: cmovlel %edi, %eax
; GENERIC-NEXT: cmpl $-128, %eax
; GENERIC-NEXT: movb $-128, %cl
; GENERIC-NEXT: jl LBB22_2
; GENERIC-NEXT: ## BB#1:
; GENERIC-NEXT: movl %eax, %ecx
; GENERIC-NEXT: LBB22_2:
; GENERIC-NEXT: movb %cl, (%rsi)
; GENERIC-NEXT: retq
;
; ATOM-LABEL: clamp_i8:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpl $127, %edi
; ATOM-NEXT: movl $127, %eax
; ATOM-NEXT: cmovlel %edi, %eax
; ATOM-NEXT: movb $-128, %cl
; ATOM-NEXT: cmpl $-128, %eax
; ATOM-NEXT: jl LBB22_2
; ATOM-NEXT: ## BB#1:
; ATOM-NEXT: movl %eax, %ecx
; ATOM-NEXT: LBB22_2:
; ATOM-NEXT: movb %cl, (%rsi)
; ATOM-NEXT: retq
%cmp = icmp sgt i32 %src, 127
%sel1 = select i1 %cmp, i32 127, i32 %src
%cmp1 = icmp slt i32 %sel1, -128
%sel2 = select i1 %cmp1, i32 -128, i32 %sel1
%conv = trunc i32 %sel2 to i8
store i8 %conv, i8* %dst, align 2
ret void
}
; reproducer for pr29002
define void @clamp(i32 %src, i16* %dst) {
; GENERIC-LABEL: clamp:
; GENERIC: ## BB#0:
; GENERIC-NEXT: cmpl $32767, %edi ## imm = 0x7FFF
; GENERIC-NEXT: movl $32767, %eax ## imm = 0x7FFF
; GENERIC-NEXT: cmovlel %edi, %eax
; GENERIC-NEXT: cmpl $-32768, %eax ## imm = 0x8000
; GENERIC-NEXT: movw $-32768, %cx ## imm = 0x8000
; GENERIC-NEXT: cmovgew %ax, %cx
; GENERIC-NEXT: movw %cx, (%rsi)
; GENERIC-NEXT: retq
;
; ATOM-LABEL: clamp:
; ATOM: ## BB#0:
; ATOM-NEXT: cmpl $32767, %edi ## imm = 0x7FFF
; ATOM-NEXT: movl $32767, %eax ## imm = 0x7FFF
; ATOM-NEXT: cmovlel %edi, %eax
; ATOM-NEXT: movw $-32768, %cx ## imm = 0x8000
; ATOM-NEXT: cmpl $-32768, %eax ## imm = 0x8000
; ATOM-NEXT: cmovgew %ax, %cx
; ATOM-NEXT: movw %cx, (%rsi)
; ATOM-NEXT: retq
%cmp = icmp sgt i32 %src, 32767
%sel1 = select i1 %cmp, i32 32767, i32 %src
%cmp1 = icmp slt i32 %sel1, -32768
%sel2 = select i1 %cmp1, i32 -32768, i32 %sel1
%conv = trunc i32 %sel2 to i16
store i16 %conv, i16* %dst, align 2
ret void
}
define void @test19() {
; This is a massive reduction of an llvm-stress test case that generates
; interesting chains feeding setcc and eventually a f32 select operation. This
; is intended to exercise the SELECT formation in the DAG combine simplifying
; a simplified select_cc node. If it it regresses and is no longer triggering
; that code path, it can be deleted.
;
; CHECK-LABEL: test19:
; CHECK: ## BB#0: ## %BB
; CHECK-NEXT: movl $-1, %eax
; CHECK-NEXT: movb $1, %cl
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB24_1: ## %CF
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: testb %cl, %cl
; CHECK-NEXT: jne LBB24_1
; CHECK-NEXT: ## BB#2: ## %CF250
; CHECK-NEXT: ## in Loop: Header=BB24_1 Depth=1
; CHECK-NEXT: jne LBB24_1
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: LBB24_3: ## %CF242
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: cmpl %eax, %eax
; CHECK-NEXT: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp LBB24_3
; CHECK-NEXT: ## BB#4: ## %CF244
; CHECK-NEXT: retq
BB:
br label %CF
CF:
%Cmp10 = icmp ule i8 undef, undef
br i1 %Cmp10, label %CF, label %CF250
CF250:
%E12 = extractelement <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, i32 2
%Cmp32 = icmp ugt i1 %Cmp10, false
br i1 %Cmp32, label %CF, label %CF242
CF242:
%Cmp38 = icmp uge i32 %E12, undef
%FC = uitofp i1 %Cmp38 to float
%Sl59 = select i1 %Cmp32, float %FC, float undef
%Cmp60 = fcmp ugt float undef, undef
br i1 %Cmp60, label %CF242, label %CF244
CF244:
%B122 = fadd float %Sl59, undef
ret void
}
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