shrink-compare.ll
7.06 KB
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
declare void @bar()
define void @test1(i32* nocapture %X) nounwind minsize {
; CHECK-LABEL: test1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $47, (%rdi)
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%tmp1 = load i32, i32* %X, align 4
%and = and i32 %tmp1, 255
%cmp = icmp eq i32 %and, 47
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test2(i32 %X) nounwind minsize {
; CHECK-LABEL: test2:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $47, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%and = and i32 %X, 255
%cmp = icmp eq i32 %and, 47
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test3(i32 %X) nounwind minsize {
; CHECK-LABEL: test3:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $-1, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%and = and i32 %X, 255
%cmp = icmp eq i32 %and, 255
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
; PR16083
define i1 @test4(i64 %a, i32 %b) {
; CHECK-LABEL: test4:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: testl %esi, %esi
; CHECK-NEXT: je .LBB3_1
; CHECK-NEXT: # %bb.2: # %lor.end
; CHECK-NEXT: # kill: def $al killed $al killed $eax
; CHECK-NEXT: retq
; CHECK-NEXT: .LBB3_1: # %lor.rhs
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: # kill: def $al killed $al killed $eax
; CHECK-NEXT: retq
entry:
%tobool = icmp ne i32 %b, 0
br i1 %tobool, label %lor.end, label %lor.rhs
lor.rhs: ; preds = %entry
%and = and i64 0, %a
%tobool1 = icmp ne i64 %and, 0
br label %lor.end
lor.end: ; preds = %lor.rhs, %entry
%p = phi i1 [ true, %entry ], [ %tobool1, %lor.rhs ]
ret i1 %p
}
@x = global { i8, i8, i8, i8, i8, i8, i8, i8 } { i8 1, i8 0, i8 0, i8 0, i8 1, i8 0, i8 0, i8 1 }, align 4
; PR16551
define void @test5(i32 %X) nounwind minsize {
; CHECK-LABEL: test5:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movzbl x+{{.*}}(%rip), %eax
; CHECK-NEXT: shll $16, %eax
; CHECK-NEXT: movzwl x+{{.*}}(%rip), %ecx
; CHECK-NEXT: orl %eax, %ecx
; CHECK-NEXT: cmpl $1, %ecx
; CHECK-NEXT: jne bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%bf.load = load i56, i56* bitcast ({ i8, i8, i8, i8, i8, i8, i8, i8 }* @x to i56*), align 4
%bf.lshr = lshr i56 %bf.load, 32
%bf.cast = trunc i56 %bf.lshr to i32
%cmp = icmp ne i32 %bf.cast, 1
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test2_1(i32 %X) nounwind minsize {
; CHECK-LABEL: test2_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movzbl %dil, %eax
; CHECK-NEXT: cmpl $256, %eax # imm = 0x100
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%and = and i32 %X, 255
%cmp = icmp eq i32 %and, 256
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_1(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $1, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, 1
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_47(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_47:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $47, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, 47
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_127(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_127:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $127, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, 127
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_neg1(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_neg1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $-1, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, -1
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_neg2(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_neg2:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $-2, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, -2
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_neg127(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_neg127:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $-127, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, -127
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_neg128(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_neg128:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: cmpb $-128, %dil
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, -128
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}
define void @test_sext_i8_icmp_255(i8 %x) nounwind minsize {
; CHECK-LABEL: test_sext_i8_icmp_255:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: je bar # TAILCALL
; CHECK-NEXT: # %bb.1: # %if.end
; CHECK-NEXT: retq
entry:
%sext = sext i8 %x to i32
%cmp = icmp eq i32 %sext, 255
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @bar() nounwind
br label %if.end
if.end:
ret void
}