mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-27 13:29:50 +00:00
0dd3549edc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107074 91177308-0d34-0410-b5e6-96231b3b80d8
157 lines
3.1 KiB
LLVM
157 lines
3.1 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
define i32 @test1(i32 %X) {
|
|
entry:
|
|
icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
|
|
zext i1 %0 to i32 ; <i32>:1 [#uses=1]
|
|
ret i32 %1
|
|
; CHECK: @test1
|
|
; CHECK: lshr i32 %X, 31
|
|
; CHECK-NEXT: ret i32
|
|
}
|
|
|
|
define i32 @test2(i32 %X) {
|
|
entry:
|
|
icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1]
|
|
zext i1 %0 to i32 ; <i32>:1 [#uses=1]
|
|
ret i32 %1
|
|
; CHECK: @test2
|
|
; CHECK: lshr i32 %X, 31
|
|
; CHECK-NEXT: xor i32
|
|
; CHECK-NEXT: ret i32
|
|
}
|
|
|
|
define i32 @test3(i32 %X) {
|
|
entry:
|
|
icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
|
|
sext i1 %0 to i32 ; <i32>:1 [#uses=1]
|
|
ret i32 %1
|
|
; CHECK: @test3
|
|
; CHECK: ashr i32 %X, 31
|
|
; CHECK-NEXT: ret i32
|
|
}
|
|
|
|
define i32 @test4(i32 %X) {
|
|
entry:
|
|
icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1]
|
|
sext i1 %0 to i32 ; <i32>:1 [#uses=1]
|
|
ret i32 %1
|
|
; CHECK: @test4
|
|
; CHECK: ashr i32 %X, 31
|
|
; CHECK-NEXT: xor i32
|
|
; CHECK-NEXT: ret i32
|
|
}
|
|
|
|
; PR4837
|
|
define <2 x i1> @test5(<2 x i64> %x) {
|
|
entry:
|
|
%V = icmp eq <2 x i64> %x, undef
|
|
ret <2 x i1> %V
|
|
; CHECK: @test5
|
|
; CHECK: ret <2 x i1> <i1 true, i1 true>
|
|
}
|
|
|
|
define i32 @test6(i32 %a, i32 %b) {
|
|
%c = icmp sle i32 %a, -1
|
|
%d = zext i1 %c to i32
|
|
%e = sub i32 0, %d
|
|
%f = and i32 %e, %b
|
|
ret i32 %f
|
|
; CHECK: @test6
|
|
; CHECK-NEXT: ashr i32 %a, 31
|
|
; CHECK-NEXT: %f = and i32 %e, %b
|
|
; CHECK-NEXT: ret i32 %f
|
|
}
|
|
|
|
|
|
define i1 @test7(i32 %x) {
|
|
entry:
|
|
%a = add i32 %x, -1
|
|
%b = icmp ult i32 %a, %x
|
|
ret i1 %b
|
|
; CHECK: @test7
|
|
; CHECK: %b = icmp ne i32 %x, 0
|
|
; CHECK: ret i1 %b
|
|
}
|
|
|
|
define i1 @test8(i32 %x){
|
|
entry:
|
|
%a = add i32 %x, -1
|
|
%b = icmp eq i32 %a, %x
|
|
ret i1 %b
|
|
; CHECK: @test8
|
|
; CHECK: ret i1 false
|
|
}
|
|
|
|
define i1 @test9(i32 %x) {
|
|
entry:
|
|
%a = add i32 %x, -2
|
|
%b = icmp ugt i32 %x, %a
|
|
ret i1 %b
|
|
; CHECK: @test9
|
|
; CHECK: icmp ugt i32 %x, 1
|
|
; CHECK: ret i1 %b
|
|
}
|
|
|
|
define i1 @test10(i32 %x){
|
|
entry:
|
|
%a = add i32 %x, -1
|
|
%b = icmp slt i32 %a, %x
|
|
ret i1 %b
|
|
|
|
; CHECK: @test10
|
|
; CHECK: %b = icmp ne i32 %x, -2147483648
|
|
; CHECK: ret i1 %b
|
|
}
|
|
|
|
define i1 @test11(i32 %x) {
|
|
%a = add nsw i32 %x, 8
|
|
%b = icmp slt i32 %x, %a
|
|
ret i1 %b
|
|
; CHECK: @test11
|
|
; CHECK: ret i1 true
|
|
}
|
|
|
|
; PR6195
|
|
define i1 @test12(i1 %A) {
|
|
%S = select i1 %A, i64 -4294967295, i64 8589934591
|
|
%B = icmp ne i64 bitcast (<2 x i32> <i32 1, i32 -1> to i64), %S
|
|
ret i1 %B
|
|
; CHECK: @test12
|
|
; CHECK-NEXT: %B = select i1
|
|
; CHECK-NEXT: ret i1 %B
|
|
}
|
|
|
|
; PR6481
|
|
define i1 @test13(i8 %X) nounwind readnone {
|
|
entry:
|
|
%cmp = icmp slt i8 undef, %X
|
|
ret i1 %cmp
|
|
; CHECK: @test13
|
|
; CHECK: ret i1 false
|
|
}
|
|
|
|
define i1 @test14(i8 %X) nounwind readnone {
|
|
entry:
|
|
%cmp = icmp slt i8 undef, -128
|
|
ret i1 %cmp
|
|
; CHECK: @test14
|
|
; CHECK: ret i1 false
|
|
}
|
|
|
|
define i1 @test15() nounwind readnone {
|
|
entry:
|
|
%cmp = icmp eq i8 undef, -128
|
|
ret i1 %cmp
|
|
; CHECK: @test15
|
|
; CHECK: ret i1 undef
|
|
}
|
|
|
|
define i1 @test16() nounwind readnone {
|
|
entry:
|
|
%cmp = icmp ne i8 undef, -128
|
|
ret i1 %cmp
|
|
; CHECK: @test16
|
|
; CHECK: ret i1 undef
|
|
}
|