mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-31 16:02:52 +01:00
42 lines
974 B
LLVM
42 lines
974 B
LLVM
; RUN: llc < %s -mcpu=generic -march=x86 | FileCheck %s
|
|
|
|
;; Simple case
|
|
define i32 @test1(i8 %x) nounwind readnone {
|
|
%A = and i8 %x, -32
|
|
%B = zext i8 %A to i32
|
|
ret i32 %B
|
|
}
|
|
; CHECK: test1
|
|
; CHECK: movzbl
|
|
; CHECK-NEXT: andl {{.*}}224
|
|
|
|
;; Multiple uses of %x but easily extensible.
|
|
define i32 @test2(i8 %x) nounwind readnone {
|
|
%A = and i8 %x, -32
|
|
%B = zext i8 %A to i32
|
|
%C = or i8 %x, 63
|
|
%D = zext i8 %C to i32
|
|
%E = add i32 %B, %D
|
|
ret i32 %E
|
|
}
|
|
; CHECK: test2
|
|
; CHECK: movzbl
|
|
; CHECK: orl $63
|
|
; CHECK: andl $224
|
|
|
|
declare void @use(i32, i8)
|
|
|
|
;; Multiple uses of %x where we shouldn't extend the load.
|
|
define void @test3(i8 %x) nounwind readnone {
|
|
%A = and i8 %x, -32
|
|
%B = zext i8 %A to i32
|
|
call void @use(i32 %B, i8 %x)
|
|
ret void
|
|
}
|
|
; CHECK: test3
|
|
; CHECK: movzbl {{[0-9]+}}(%esp), [[REGISTER:%e[a-z]{2}]]
|
|
; CHECK-NEXT: movl [[REGISTER]], 4(%esp)
|
|
; CHECK-NEXT: andl $224, [[REGISTER]]
|
|
; CHECK-NEXT: movl [[REGISTER]], (%esp)
|
|
; CHECK-NEXT: call{{.*}}use
|