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[SROA] Add a test case for r225068 / PR22080. 

llvm-svn: 225070
This commit is contained in:
Chandler Carruth 2015-01-02 00:34:29 +00:00
parent 29c22fae46
commit e65ae89327
1 changed files with 36 additions and 0 deletions
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36
llvm/test/Transforms/SROA/basictest.ll
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@ -1456,3 +1456,39 @@ entry:
%ret = fadd float %f1, %f2
ret float %ret
}
@complex1 = external global [2 x float]
@complex2 = external global [2 x float]
define void @test26() {
; Test a case of splitting up loads and stores against a globals.
;
; CHECK-LABEL: @test26(
; CHECK-NOT: alloca
; CHECK: %[[L1:.*]] = load i32* bitcast
; CHECK: %[[L2:.*]] = load i32* bitcast
; CHECK: %[[F1:.*]] = bitcast i32 %[[L1]] to float
; CHECK: %[[F2:.*]] = bitcast i32 %[[L2]] to float
; CHECK: %[[SUM:.*]] = fadd float %[[F1]], %[[F2]]
; CHECK: %[[C1:.*]] = bitcast float %[[SUM]] to i32
; CHECK: %[[C2:.*]] = bitcast float %[[SUM]] to i32
; CHECK: store i32 %[[C1]], i32* bitcast
; CHECK: store i32 %[[C2]], i32* bitcast
; CHECK: ret void
entry:
%a = alloca i64
%a.cast = bitcast i64* %a to [2 x float]*
%a.gep1 = getelementptr [2 x float]* %a.cast, i32 0, i32 0
%a.gep2 = getelementptr [2 x float]* %a.cast, i32 0, i32 1
%v1 = load i64* bitcast ([2 x float]* @complex1 to i64*)
store i64 %v1, i64* %a
%f1 = load float* %a.gep1
%f2 = load float* %a.gep2
%sum = fadd float %f1, %f2
store float %sum, float* %a.gep1
store float %sum, float* %a.gep2
%v2 = load i64* %a
store i64 %v2, i64* bitcast ([2 x float]* @complex2 to i64*)
ret void
}