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822ef54156
Created a Thumb2 predicated pattern matcher that uses Thumb2 and
HasT2ExtractPack and used it to redefine the patterns for sxta{b|h}
and uxta{b|h}. Also used the similar patterns to fill in isel pattern
gaps for the corresponding instructions in the ARM backend.
The patch is mainly changes to tests since most of this functionality
appears not to have been tested.
Differential Revision: https://reviews.llvm.org/D23273
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278207 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
2.1 KiB
LLVM
94 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-a8 %s -o - | FileCheck %s --check-prefix=A8
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; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-m3 %s -o - | FileCheck %s --check-prefix=M3
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; rdar://11318438
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define zeroext i8 @test1(i32 %A.u) {
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; CHECK-LABEL: test1:
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; A8: uxtb r0, r0
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%B.u = trunc i32 %A.u to i8
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ret i8 %B.u
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}
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define zeroext i32 @test2(i32 %A.u, i32 %B.u) {
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; CHECK-LABEL: test2:
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; A8: uxtab r0, r0, r1
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; M3: uxtb r1, r1
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; M3-NOT: uxtab
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; M3: add r0, r1
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%C.u = trunc i32 %B.u to i8
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%D.u = zext i8 %C.u to i32
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%E.u = add i32 %A.u, %D.u
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ret i32 %E.u
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}
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define zeroext i32 @test3(i32 %A.u) {
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; CHECK-LABEL: test3:
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; A8: ubfx r0, r0, #8, #16
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; M3: ubfx r0, r0, #8, #16
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%B.u = lshr i32 %A.u, 8
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%C.u = shl i32 %A.u, 24
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%D.u = or i32 %B.u, %C.u
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%E.u = trunc i32 %D.u to i16
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%F.u = zext i16 %E.u to i32
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ret i32 %F.u
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}
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define i32 @test4(i32 %A, i32 %X) {
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; CHECK-LABEL: test4:
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; A8: uxtab r0, r0, r1, ror #16
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; M3-NOT: uxtab
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%X.hi = lshr i32 %X, 16
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%X.trunc = trunc i32 %X.hi to i8
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%addend = zext i8 %X.trunc to i32
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%sum = add i32 %A, %addend
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ret i32 %sum
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}
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define i32 @test5(i32 %A, i32 %X) {
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; CHECK-LABEL: test5:
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; A8: uxtah r0, r0, r1, ror #8
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; M3-NOT: uxtah
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%X.hi = lshr i32 %X, 8
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%X.trunc = trunc i32 %X.hi to i16
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%addend = zext i16 %X.trunc to i32
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%sum = add i32 %A, %addend
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ret i32 %sum
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}
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define i32 @test6(i32 %A, i32 %X) {
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; CHECK-LABEL: test6:
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; A8: uxtab r0, r0, r1, ror #8
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; M3-NOT: uxtab
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%X.hi = lshr i32 %X, 8
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%X.trunc = trunc i32 %X.hi to i8
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%addend = zext i8 %X.trunc to i32
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%sum = add i32 %A, %addend
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ret i32 %sum
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}
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define i32 @test7(i32 %A, i32 %X) {
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; CHECK-LABEL: test7:
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; A8: uxtah r0, r0, r1, ror #24
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; M3-NOT: uxtah
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%lshr = lshr i32 %X, 24
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%shl = shl i32 %X, 8
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%or = or i32 %lshr, %shl
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%trunc = trunc i32 %or to i16
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%zext = zext i16 %trunc to i32
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%add = add i32 %A, %zext
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ret i32 %add
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}
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define i32 @test8(i32 %A, i32 %X) {
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; CHECK-LABEL: test8:
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; A8: uxtah r0, r0, r1, ror #24
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; M3-NOT: uxtah
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%lshr = lshr i32 %X, 24
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%shl = shl i32 %X, 8
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%or = or i32 %lshr, %shl
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%and = and i32 %or, 65535
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%add = add i32 %A, %and
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ret i32 %add
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}
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