mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-02 11:30:10 +00:00
fee6969463
Shuffles are more difficult to lower and we usually don't touch them, while we do optimize selects more often. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180875 91177308-0d34-0410-b5e6-96231b3b80d8
424 lines
16 KiB
LLVM
424 lines
16 KiB
LLVM
; RUN: opt < %s -sroa -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n8:16:32:64"
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%S1 = type { i64, [42 x float] }
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define i32 @test1(<4 x i32> %x, <4 x i32> %y) {
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; CHECK: @test1
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entry:
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%a = alloca [2 x <4 x i32>]
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; CHECK-NOT: alloca
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%a.x = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0
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store <4 x i32> %x, <4 x i32>* %a.x
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%a.y = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1
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store <4 x i32> %y, <4 x i32>* %a.y
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; CHECK-NOT: store
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%a.tmp1 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0, i64 2
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%tmp1 = load i32* %a.tmp1
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%a.tmp2 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 3
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%tmp2 = load i32* %a.tmp2
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%a.tmp3 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 0
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%tmp3 = load i32* %a.tmp3
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; CHECK-NOT: load
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; CHECK: extractelement <4 x i32> %x, i32 2
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; CHECK-NEXT: extractelement <4 x i32> %y, i32 3
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; CHECK-NEXT: extractelement <4 x i32> %y, i32 0
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%tmp4 = add i32 %tmp1, %tmp2
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%tmp5 = add i32 %tmp3, %tmp4
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ret i32 %tmp5
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; CHECK-NEXT: add
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; CHECK-NEXT: add
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; CHECK-NEXT: ret
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}
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define i32 @test2(<4 x i32> %x, <4 x i32> %y) {
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; CHECK: @test2
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entry:
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%a = alloca [2 x <4 x i32>]
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; CHECK-NOT: alloca
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%a.x = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0
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store <4 x i32> %x, <4 x i32>* %a.x
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%a.y = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1
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store <4 x i32> %y, <4 x i32>* %a.y
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; CHECK-NOT: store
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%a.tmp1 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0, i64 2
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%tmp1 = load i32* %a.tmp1
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%a.tmp2 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 3
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%tmp2 = load i32* %a.tmp2
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%a.tmp3 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 0
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%a.tmp3.cast = bitcast i32* %a.tmp3 to <2 x i32>*
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%tmp3.vec = load <2 x i32>* %a.tmp3.cast
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%tmp3 = extractelement <2 x i32> %tmp3.vec, i32 0
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; CHECK-NOT: load
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; CHECK: %[[extract1:.*]] = extractelement <4 x i32> %x, i32 2
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; CHECK-NEXT: %[[extract2:.*]] = extractelement <4 x i32> %y, i32 3
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; CHECK-NEXT: %[[extract3:.*]] = shufflevector <4 x i32> %y, <4 x i32> undef, <2 x i32> <i32 0, i32 1>
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; CHECK-NEXT: %[[extract4:.*]] = extractelement <2 x i32> %[[extract3]], i32 0
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%tmp4 = add i32 %tmp1, %tmp2
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%tmp5 = add i32 %tmp3, %tmp4
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ret i32 %tmp5
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; CHECK-NEXT: %[[sum1:.*]] = add i32 %[[extract1]], %[[extract2]]
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; CHECK-NEXT: %[[sum2:.*]] = add i32 %[[extract4]], %[[sum1]]
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; CHECK-NEXT: ret i32 %[[sum2]]
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}
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define i32 @test3(<4 x i32> %x, <4 x i32> %y) {
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; CHECK: @test3
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entry:
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%a = alloca [2 x <4 x i32>]
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; CHECK-NOT: alloca
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%a.x = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0
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store <4 x i32> %x, <4 x i32>* %a.x
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%a.y = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1
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store <4 x i32> %y, <4 x i32>* %a.y
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; CHECK-NOT: store
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%a.y.cast = bitcast <4 x i32>* %a.y to i8*
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call void @llvm.memset.p0i8.i32(i8* %a.y.cast, i8 0, i32 16, i32 1, i1 false)
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; CHECK-NOT: memset
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%a.tmp1 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0, i64 2
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%a.tmp1.cast = bitcast i32* %a.tmp1 to i8*
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call void @llvm.memset.p0i8.i32(i8* %a.tmp1.cast, i8 -1, i32 4, i32 1, i1 false)
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%tmp1 = load i32* %a.tmp1
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%a.tmp2 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 3
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%tmp2 = load i32* %a.tmp2
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%a.tmp3 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 0
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%tmp3 = load i32* %a.tmp3
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; CHECK-NOT: load
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; CHECK: %[[insert:.*]] = insertelement <4 x i32> %x, i32 -1, i32 2
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; CHECK-NEXT: extractelement <4 x i32> %[[insert]], i32 2
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; CHECK-NEXT: extractelement <4 x i32> zeroinitializer, i32 3
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; CHECK-NEXT: extractelement <4 x i32> zeroinitializer, i32 0
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%tmp4 = add i32 %tmp1, %tmp2
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%tmp5 = add i32 %tmp3, %tmp4
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ret i32 %tmp5
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; CHECK-NEXT: add
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; CHECK-NEXT: add
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; CHECK-NEXT: ret
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}
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define i32 @test4(<4 x i32> %x, <4 x i32> %y, <4 x i32>* %z) {
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; CHECK: @test4
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entry:
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%a = alloca [2 x <4 x i32>]
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; CHECK-NOT: alloca
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%a.x = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0
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store <4 x i32> %x, <4 x i32>* %a.x
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%a.y = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1
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store <4 x i32> %y, <4 x i32>* %a.y
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; CHECK-NOT: store
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%a.y.cast = bitcast <4 x i32>* %a.y to i8*
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%z.cast = bitcast <4 x i32>* %z to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a.y.cast, i8* %z.cast, i32 16, i32 1, i1 false)
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; CHECK-NOT: memcpy
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%a.tmp1 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0, i64 2
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%a.tmp1.cast = bitcast i32* %a.tmp1 to i8*
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%z.tmp1 = getelementptr inbounds <4 x i32>* %z, i64 0, i64 2
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%z.tmp1.cast = bitcast i32* %z.tmp1 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a.tmp1.cast, i8* %z.tmp1.cast, i32 4, i32 1, i1 false)
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%tmp1 = load i32* %a.tmp1
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%a.tmp2 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 3
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%tmp2 = load i32* %a.tmp2
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%a.tmp3 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 0
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%tmp3 = load i32* %a.tmp3
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; CHECK-NOT: memcpy
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; CHECK: %[[load:.*]] = load <4 x i32>* %z
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; CHECK-NEXT: %[[gep:.*]] = getelementptr inbounds <4 x i32>* %z, i64 0, i64 2
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; CHECK-NEXT: %[[element_load:.*]] = load i32* %[[gep]]
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; CHECK-NEXT: %[[insert:.*]] = insertelement <4 x i32> %x, i32 %[[element_load]], i32 2
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; CHECK-NEXT: extractelement <4 x i32> %[[insert]], i32 2
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; CHECK-NEXT: extractelement <4 x i32> %[[load]], i32 3
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; CHECK-NEXT: extractelement <4 x i32> %[[load]], i32 0
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%tmp4 = add i32 %tmp1, %tmp2
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%tmp5 = add i32 %tmp3, %tmp4
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ret i32 %tmp5
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; CHECK-NEXT: add
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; CHECK-NEXT: add
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; CHECK-NEXT: ret
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}
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define i32 @test5(<4 x i32> %x, <4 x i32> %y, <4 x i32>* %z) {
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; CHECK: @test5
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; The same as the above, but with reversed source and destination for the
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; element memcpy, and a self copy.
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entry:
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%a = alloca [2 x <4 x i32>]
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; CHECK-NOT: alloca
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%a.x = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0
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store <4 x i32> %x, <4 x i32>* %a.x
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%a.y = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1
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store <4 x i32> %y, <4 x i32>* %a.y
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; CHECK-NOT: store
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%a.y.cast = bitcast <4 x i32>* %a.y to i8*
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%a.x.cast = bitcast <4 x i32>* %a.x to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a.x.cast, i8* %a.y.cast, i32 16, i32 1, i1 false)
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; CHECK-NOT: memcpy
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%a.tmp1 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 0, i64 2
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%a.tmp1.cast = bitcast i32* %a.tmp1 to i8*
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%z.tmp1 = getelementptr inbounds <4 x i32>* %z, i64 0, i64 2
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%z.tmp1.cast = bitcast i32* %z.tmp1 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %z.tmp1.cast, i8* %a.tmp1.cast, i32 4, i32 1, i1 false)
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%tmp1 = load i32* %a.tmp1
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%a.tmp2 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 3
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%tmp2 = load i32* %a.tmp2
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%a.tmp3 = getelementptr inbounds [2 x <4 x i32>]* %a, i64 0, i64 1, i64 0
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%tmp3 = load i32* %a.tmp3
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; CHECK-NOT: memcpy
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; CHECK: %[[gep:.*]] = getelementptr inbounds <4 x i32>* %z, i64 0, i64 2
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; CHECK-NEXT: %[[extract:.*]] = extractelement <4 x i32> %y, i32 2
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; CHECK-NEXT: store i32 %[[extract]], i32* %[[gep]]
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; CHECK-NEXT: extractelement <4 x i32> %y, i32 2
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; CHECK-NEXT: extractelement <4 x i32> %y, i32 3
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; CHECK-NEXT: extractelement <4 x i32> %y, i32 0
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%tmp4 = add i32 %tmp1, %tmp2
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%tmp5 = add i32 %tmp3, %tmp4
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ret i32 %tmp5
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; CHECK-NEXT: add
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; CHECK-NEXT: add
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; CHECK-NEXT: ret
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
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declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind
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define i64 @test6(<4 x i64> %x, <4 x i64> %y, i64 %n) {
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; CHECK: @test6
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; The old scalarrepl pass would wrongly drop the store to the second alloca.
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; PR13254
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%tmp = alloca { <4 x i64>, <4 x i64> }
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%p0 = getelementptr inbounds { <4 x i64>, <4 x i64> }* %tmp, i32 0, i32 0
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store <4 x i64> %x, <4 x i64>* %p0
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; CHECK: store <4 x i64> %x,
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%p1 = getelementptr inbounds { <4 x i64>, <4 x i64> }* %tmp, i32 0, i32 1
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store <4 x i64> %y, <4 x i64>* %p1
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; CHECK: store <4 x i64> %y,
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%addr = getelementptr inbounds { <4 x i64>, <4 x i64> }* %tmp, i32 0, i32 0, i64 %n
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%res = load i64* %addr, align 4
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ret i64 %res
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}
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define <4 x i32> @test_subvec_store() {
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; CHECK: @test_subvec_store
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entry:
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%a = alloca <4 x i32>
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; CHECK-NOT: alloca
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%a.gep0 = getelementptr <4 x i32>* %a, i32 0, i32 0
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%a.cast0 = bitcast i32* %a.gep0 to <2 x i32>*
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store <2 x i32> <i32 0, i32 0>, <2 x i32>* %a.cast0
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; CHECK-NOT: store
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; CHECK: select <4 x i1> <i1 true, i1 true, i1 false, i1 false>
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%a.gep1 = getelementptr <4 x i32>* %a, i32 0, i32 1
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%a.cast1 = bitcast i32* %a.gep1 to <2 x i32>*
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store <2 x i32> <i32 1, i32 1>, <2 x i32>* %a.cast1
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; CHECK-NEXT: select <4 x i1> <i1 false, i1 true, i1 true, i1 false>
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%a.gep2 = getelementptr <4 x i32>* %a, i32 0, i32 2
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%a.cast2 = bitcast i32* %a.gep2 to <2 x i32>*
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store <2 x i32> <i32 2, i32 2>, <2 x i32>* %a.cast2
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; CHECK-NEXT: select <4 x i1> <i1 false, i1 false, i1 true, i1 true>
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%a.gep3 = getelementptr <4 x i32>* %a, i32 0, i32 3
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store i32 3, i32* %a.gep3
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; CHECK-NEXT: insertelement <4 x i32>
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%ret = load <4 x i32>* %a
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ret <4 x i32> %ret
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; CHECK-NEXT: ret <4 x i32>
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}
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define <4 x i32> @test_subvec_load() {
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; CHECK: @test_subvec_load
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entry:
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%a = alloca <4 x i32>
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; CHECK-NOT: alloca
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store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* %a
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; CHECK-NOT: store
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%a.gep0 = getelementptr <4 x i32>* %a, i32 0, i32 0
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%a.cast0 = bitcast i32* %a.gep0 to <2 x i32>*
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%first = load <2 x i32>* %a.cast0
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; CHECK-NOT: load
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; CHECK: %[[extract1:.*]] = shufflevector <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32> undef, <2 x i32> <i32 0, i32 1>
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%a.gep1 = getelementptr <4 x i32>* %a, i32 0, i32 1
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%a.cast1 = bitcast i32* %a.gep1 to <2 x i32>*
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%second = load <2 x i32>* %a.cast1
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; CHECK-NEXT: %[[extract2:.*]] = shufflevector <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32> undef, <2 x i32> <i32 1, i32 2>
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%a.gep2 = getelementptr <4 x i32>* %a, i32 0, i32 2
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%a.cast2 = bitcast i32* %a.gep2 to <2 x i32>*
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%third = load <2 x i32>* %a.cast2
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; CHECK-NEXT: %[[extract3:.*]] = shufflevector <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32> undef, <2 x i32> <i32 2, i32 3>
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%tmp = shufflevector <2 x i32> %first, <2 x i32> %second, <2 x i32> <i32 0, i32 2>
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%ret = shufflevector <2 x i32> %tmp, <2 x i32> %third, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
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; CHECK-NEXT: %[[tmp:.*]] = shufflevector <2 x i32> %[[extract1]], <2 x i32> %[[extract2]], <2 x i32> <i32 0, i32 2>
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; CHECK-NEXT: %[[ret:.*]] = shufflevector <2 x i32> %[[tmp]], <2 x i32> %[[extract3]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
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ret <4 x i32> %ret
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; CHECK-NEXT: ret <4 x i32> %[[ret]]
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}
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declare void @llvm.memset.p0i32.i32(i32* nocapture, i32, i32, i32, i1) nounwind
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define <4 x float> @test_subvec_memset() {
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; CHECK: @test_subvec_memset
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entry:
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%a = alloca <4 x float>
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; CHECK-NOT: alloca
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%a.gep0 = getelementptr <4 x float>* %a, i32 0, i32 0
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%a.cast0 = bitcast float* %a.gep0 to i8*
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call void @llvm.memset.p0i8.i32(i8* %a.cast0, i8 0, i32 8, i32 0, i1 false)
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; CHECK-NOT: store
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; CHECK: select <4 x i1> <i1 true, i1 true, i1 false, i1 false>
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%a.gep1 = getelementptr <4 x float>* %a, i32 0, i32 1
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%a.cast1 = bitcast float* %a.gep1 to i8*
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call void @llvm.memset.p0i8.i32(i8* %a.cast1, i8 1, i32 8, i32 0, i1 false)
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; CHECK-NEXT: select <4 x i1> <i1 false, i1 true, i1 true, i1 false>
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%a.gep2 = getelementptr <4 x float>* %a, i32 0, i32 2
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%a.cast2 = bitcast float* %a.gep2 to i8*
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call void @llvm.memset.p0i8.i32(i8* %a.cast2, i8 3, i32 8, i32 0, i1 false)
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; CHECK-NEXT: select <4 x i1> <i1 false, i1 false, i1 true, i1 true>
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%a.gep3 = getelementptr <4 x float>* %a, i32 0, i32 3
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%a.cast3 = bitcast float* %a.gep3 to i8*
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call void @llvm.memset.p0i8.i32(i8* %a.cast3, i8 7, i32 4, i32 0, i1 false)
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; CHECK-NEXT: insertelement <4 x float>
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%ret = load <4 x float>* %a
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ret <4 x float> %ret
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; CHECK-NEXT: ret <4 x float>
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}
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define <4 x float> @test_subvec_memcpy(i8* %x, i8* %y, i8* %z, i8* %f, i8* %out) {
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; CHECK: @test_subvec_memcpy
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entry:
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%a = alloca <4 x float>
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; CHECK-NOT: alloca
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%a.gep0 = getelementptr <4 x float>* %a, i32 0, i32 0
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%a.cast0 = bitcast float* %a.gep0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a.cast0, i8* %x, i32 8, i32 0, i1 false)
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; CHECK: %[[xptr:.*]] = bitcast i8* %x to <2 x float>*
|
|
; CHECK-NEXT: %[[x:.*]] = load <2 x float>* %[[xptr]]
|
|
; CHECK-NEXT: %[[expand_x:.*]] = shufflevector <2 x float> %[[x]], <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
|
|
; CHECK-NEXT: select <4 x i1> <i1 true, i1 true, i1 false, i1 false>
|
|
|
|
%a.gep1 = getelementptr <4 x float>* %a, i32 0, i32 1
|
|
%a.cast1 = bitcast float* %a.gep1 to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a.cast1, i8* %y, i32 8, i32 0, i1 false)
|
|
; CHECK-NEXT: %[[yptr:.*]] = bitcast i8* %y to <2 x float>*
|
|
; CHECK-NEXT: %[[y:.*]] = load <2 x float>* %[[yptr]]
|
|
; CHECK-NEXT: %[[expand_y:.*]] = shufflevector <2 x float> %[[y]], <2 x float> undef, <4 x i32> <i32 undef, i32 0, i32 1, i32 undef>
|
|
; CHECK-NEXT: select <4 x i1> <i1 false, i1 true, i1 true, i1 false>
|
|
|
|
%a.gep2 = getelementptr <4 x float>* %a, i32 0, i32 2
|
|
%a.cast2 = bitcast float* %a.gep2 to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a.cast2, i8* %z, i32 8, i32 0, i1 false)
|
|
; CHECK-NEXT: %[[zptr:.*]] = bitcast i8* %z to <2 x float>*
|
|
; CHECK-NEXT: %[[z:.*]] = load <2 x float>* %[[zptr]]
|
|
; CHECK-NEXT: %[[expand_z:.*]] = shufflevector <2 x float> %[[z]], <2 x float> undef, <4 x i32> <i32 undef, i32 undef, i32 0, i32 1>
|
|
; CHECK-NEXT: select <4 x i1> <i1 false, i1 false, i1 true, i1 true>
|
|
|
|
%a.gep3 = getelementptr <4 x float>* %a, i32 0, i32 3
|
|
%a.cast3 = bitcast float* %a.gep3 to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a.cast3, i8* %f, i32 4, i32 0, i1 false)
|
|
; CHECK-NEXT: %[[fptr:.*]] = bitcast i8* %f to float*
|
|
; CHECK-NEXT: %[[f:.*]] = load float* %[[fptr]]
|
|
; CHECK-NEXT: %[[insert_f:.*]] = insertelement <4 x float>
|
|
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %out, i8* %a.cast2, i32 8, i32 0, i1 false)
|
|
; CHECK-NEXT: %[[outptr:.*]] = bitcast i8* %out to <2 x float>*
|
|
; CHECK-NEXT: %[[extract_out:.*]] = shufflevector <4 x float> %[[insert_f]], <4 x float> undef, <2 x i32> <i32 2, i32 3>
|
|
; CHECK-NEXT: store <2 x float> %[[extract_out]], <2 x float>* %[[outptr]]
|
|
|
|
%ret = load <4 x float>* %a
|
|
|
|
ret <4 x float> %ret
|
|
; CHECK-NEXT: ret <4 x float> %[[insert_f]]
|
|
}
|
|
|
|
define i32 @PR14212() {
|
|
; CHECK: @PR14212
|
|
; This caused a crash when "splitting" the load of the i32 in order to promote
|
|
; the store of <3 x i8> properly. Heavily reduced from an OpenCL test case.
|
|
entry:
|
|
%retval = alloca <3 x i8>, align 4
|
|
; CHECK-NOT: alloca
|
|
|
|
store <3 x i8> undef, <3 x i8>* %retval, align 4
|
|
%cast = bitcast <3 x i8>* %retval to i32*
|
|
%load = load i32* %cast, align 4
|
|
ret i32 %load
|
|
; CHECK: ret i32
|
|
}
|
|
|
|
define <2 x i8> @PR14349.1(i32 %x) {
|
|
; CHECK: @PR14349.1
|
|
; The first testcase for broken SROA rewriting of split integer loads and
|
|
; stores due to smaller vector loads and stores. This particular test ensures
|
|
; that we can rewrite a split store of an integer to a store of a vector.
|
|
entry:
|
|
%a = alloca i32
|
|
; CHECK-NOT: alloca
|
|
|
|
store i32 %x, i32* %a
|
|
; CHECK-NOT: store
|
|
|
|
%cast = bitcast i32* %a to <2 x i8>*
|
|
%vec = load <2 x i8>* %cast
|
|
; CHECK-NOT: load
|
|
|
|
ret <2 x i8> %vec
|
|
; CHECK: %[[trunc:.*]] = trunc i32 %x to i16
|
|
; CHECK: %[[cast:.*]] = bitcast i16 %[[trunc]] to <2 x i8>
|
|
; CHECK: ret <2 x i8> %[[cast]]
|
|
}
|
|
|
|
define i32 @PR14349.2(<2 x i8> %x) {
|
|
; CHECK: @PR14349.2
|
|
; The first testcase for broken SROA rewriting of split integer loads and
|
|
; stores due to smaller vector loads and stores. This particular test ensures
|
|
; that we can rewrite a split load of an integer to a load of a vector.
|
|
entry:
|
|
%a = alloca i32
|
|
; CHECK-NOT: alloca
|
|
|
|
%cast = bitcast i32* %a to <2 x i8>*
|
|
store <2 x i8> %x, <2 x i8>* %cast
|
|
; CHECK-NOT: store
|
|
|
|
%int = load i32* %a
|
|
; CHECK-NOT: load
|
|
|
|
ret i32 %int
|
|
; CHECK: %[[cast:.*]] = bitcast <2 x i8> %x to i16
|
|
; CHECK: %[[trunc:.*]] = zext i16 %[[cast]] to i32
|
|
; CHECK: %[[insert:.*]] = or i32 %{{.*}}, %[[trunc]]
|
|
; CHECK: ret i32 %[[insert]]
|
|
}
|