llvm-6502/test/CodeGen/Thumb/ldr_ext.ll
Evan Cheng 0e87e23f6e v4, v5 does not support sxtb / sxth.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80322 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-28 00:31:43 +00:00

58 lines
1007 B
LLVM

; RUN: llvm-as < %s | llc -march=thumb | FileCheck %s -check-prefix=V5
; RUN: llvm-as < %s | llc -march=thumb -mattr=+v6 | FileCheck %s -check-prefix=V6
; rdar://7176514
define i32 @test1(i8* %t1) nounwind {
; V5: ldrb
; V6: ldrb
%tmp.u = load i8* %t1
%tmp1.s = zext i8 %tmp.u to i32
ret i32 %tmp1.s
}
define i32 @test2(i16* %t1) nounwind {
; V5: ldrh
; V6: ldrh
%tmp.u = load i16* %t1
%tmp1.s = zext i16 %tmp.u to i32
ret i32 %tmp1.s
}
define i32 @test3(i8* %t0) nounwind {
; V5: ldrb
; V5: lsls
; V5: asrs
; V6: ldrb
; V6: sxtb
%tmp.s = load i8* %t0
%tmp1.s = sext i8 %tmp.s to i32
ret i32 %tmp1.s
}
define i32 @test4(i16* %t0) nounwind {
; V5: ldrh
; V5: lsls
; V5: asrs
; V6: ldrh
; V6: sxth
%tmp.s = load i16* %t0
%tmp1.s = sext i16 %tmp.s to i32
ret i32 %tmp1.s
}
define i32 @test5() nounwind {
; V5: movs r0, #0
; V5: ldrsh
; V6: movs r0, #0
; V6: ldrsh
%tmp.s = load i16* null
%tmp1.s = sext i16 %tmp.s to i32
ret i32 %tmp1.s
}