forked from OSchip/llvm-project
94 lines
3.4 KiB
LLVM
94 lines
3.4 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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%"struct.std::complex" = type { { float, float } }
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@dd = external global %"struct.std::complex", align 4
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@dd2 = external global %"struct.std::complex", align 4
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define void @_Z3fooi(i32 signext %n) {
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entry:
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br label %for.cond
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for.cond:
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%ldd.sroa.0.0 = phi i32 [ 0, %entry ], [ %5, %for.body ]
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%ldd.sroa.6.0 = phi i32 [ 0, %entry ], [ %7, %for.body ]
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%cmp = icmp slt i32 %i.0, %n
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br i1 %cmp, label %for.body, label %for.end
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for.body:
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%0 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd, i64 0, i32 0, i32 0), align 4
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%1 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd, i64 0, i32 0, i32 1), align 4
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%2 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd2, i64 0, i32 0, i32 0), align 4
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%3 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd2, i64 0, i32 0, i32 1), align 4
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%mul.i = fmul float %0, %2
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%mul4.i = fmul float %1, %3
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%sub.i = fsub float %mul.i, %mul4.i
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%mul5.i = fmul float %1, %2
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%mul6.i = fmul float %0, %3
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%add.i4 = fadd float %mul5.i, %mul6.i
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%4 = bitcast i32 %ldd.sroa.0.0 to float
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%add.i = fadd float %sub.i, %4
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%5 = bitcast float %add.i to i32
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%6 = bitcast i32 %ldd.sroa.6.0 to float
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%add4.i = fadd float %add.i4, %6
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%7 = bitcast float %add4.i to i32
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%inc = add nsw i32 %i.0, 1
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br label %for.cond
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for.end:
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store i32 %ldd.sroa.0.0, i32* bitcast (%"struct.std::complex"* @dd to i32*), align 4
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store i32 %ldd.sroa.6.0, i32* bitcast (float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd, i64 0, i32 0, i32 1) to i32*), align 4
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ret void
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; CHECK: phi float
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; CHECK: store float
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; CHECK-NOT: bitcast
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}
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define void @multi_phi(i32 signext %n) {
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entry:
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br label %for.cond
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for.cond:
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%ldd.sroa.0.0 = phi i32 [ 0, %entry ], [ %9, %odd.bb ]
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %odd.bb ]
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%cmp = icmp slt i32 %i.0, %n
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br i1 %cmp, label %for.body, label %for.end
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for.body:
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%0 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd, i64 0, i32 0, i32 0), align 4
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%1 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd, i64 0, i32 0, i32 1), align 4
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%2 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd2, i64 0, i32 0, i32 0), align 4
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%3 = load float, float* getelementptr inbounds (%"struct.std::complex", %"struct.std::complex"* @dd2, i64 0, i32 0, i32 1), align 4
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%mul.i = fmul float %0, %2
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%mul4.i = fmul float %1, %3
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%sub.i = fsub float %mul.i, %mul4.i
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%4 = bitcast i32 %ldd.sroa.0.0 to float
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%add.i = fadd float %sub.i, %4
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%5 = bitcast float %add.i to i32
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%inc = add nsw i32 %i.0, 1
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%bit0 = and i32 %inc, 1
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%even = icmp slt i32 %bit0, 1
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br i1 %even, label %even.bb, label %odd.bb
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even.bb:
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%6 = bitcast i32 %5 to float
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%7 = fadd float %sub.i, %6
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%8 = bitcast float %7 to i32
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br label %odd.bb
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odd.bb:
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%9 = phi i32 [ %5, %for.body ], [ %8, %even.bb ]
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br label %for.cond
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for.end:
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store i32 %ldd.sroa.0.0, i32* bitcast (%"struct.std::complex"* @dd to i32*), align 4
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ret void
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; CHECK-LABEL: @multi_phi(
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; CHECK: phi float
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; CHECK: store float
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; CHECK-NOT: bitcast
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}
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