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