blob: 07e71737ad30ec2027db40e97001dafbd113982c [file] [log] [blame]
; Tests desired and undesired folding of load instructions into cast
; instructions. The folding is only done when liveness analysis is performed,
; so only O2 is tested.
; RUN: %p2i --filetype=obj --disassemble -i %s --args -O2 | FileCheck %s
; Not testing trunc, or 32-bit bitcast, because the lowered code uses pretty
; much the same mov instructions regardless of whether folding is done.
define internal i32 @zext_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i8*
%load = load i8, i8* %addr, align 1
%result = zext i8 %load to i32
ret i32 %result
}
; CHECK-LABEL: zext_fold
; CHECK: movzx {{.*}},BYTE PTR [{{.*}}+0xc8]
define internal i32 @zext_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i8*
%load = load i8, i8* %addr, align 1
%tmp1 = zext i8 %load to i32
%tmp2 = zext i8 %load to i32
%result = add i32 %tmp1, %tmp2
ret i32 %result
}
; Test that load folding does not happen.
; CHECK-LABEL: zext_nofold
; CHECK-NOT: movzx {{.*}},BYTE PTR [{{.*}}+0xc8]
define internal i32 @sext_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i8*
%load = load i8, i8* %addr, align 1
%result = sext i8 %load to i32
ret i32 %result
}
; CHECK-LABEL: sext_fold
; CHECK: movsx {{.*}},BYTE PTR [{{.*}}+0xc8]
define internal i32 @sext_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i8*
%load = load i8, i8* %addr, align 1
%tmp1 = sext i8 %load to i32
%tmp2 = sext i8 %load to i32
%result = add i32 %tmp1, %tmp2
ret i32 %result
}
; Test that load folding does not happen.
; CHECK-LABEL: sext_nofold
; CHECK-NOT: movsx {{.*}},BYTE PTR [{{.*}}+0xc8]
define internal float @fptrunc_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%result = fptrunc double %load to float
ret float %result
}
; CHECK-LABEL: fptrunc_fold
; CHECK: cvtsd2ss {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal float @fptrunc_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%tmp1 = fptrunc double %load to float
%tmp2 = fptrunc double %load to float
%result = fadd float %tmp1, %tmp2
ret float %result
}
; Test that load folding does not happen.
; CHECK-LABEL: fptrunc_nofold
; CHECK-NOT: cvtsd2ss {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal double @fpext_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to float*
%load = load float, float* %addr, align 4
%result = fpext float %load to double
ret double %result
}
; CHECK-LABEL: fpext_fold
; CHECK: cvtss2sd {{.*}},DWORD PTR [{{.*}}+0xc8]
define internal double @fpext_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to float*
%load = load float, float* %addr, align 4
%tmp1 = fpext float %load to double
%tmp2 = fpext float %load to double
%result = fadd double %tmp1, %tmp2
ret double %result
}
; Test that load folding does not happen.
; CHECK-LABEL: fpext_nofold
; CHECK-NOT: cvtss2sd {{.*}},DWORD PTR [{{.*}}+0xc8]
define internal i32 @fptoui_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%result = fptoui double %load to i16
%result2 = zext i16 %result to i32
ret i32 %result2
}
; CHECK-LABEL: fptoui_fold
; CHECK: cvttsd2si {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal i32 @fptoui_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%tmp1 = fptoui double %load to i16
%tmp2 = fptoui double %load to i16
%result = add i16 %tmp1, %tmp2
%result2 = zext i16 %result to i32
ret i32 %result2
}
; Test that load folding does not happen.
; CHECK-LABEL: fptoui_nofold
; CHECK-NOT: cvttsd2si {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal i32 @fptosi_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%result = fptosi double %load to i16
%result2 = zext i16 %result to i32
ret i32 %result2
}
; CHECK-LABEL: fptosi_fold
; CHECK: cvttsd2si {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal i32 @fptosi_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%tmp1 = fptosi double %load to i16
%tmp2 = fptosi double %load to i16
%result = add i16 %tmp1, %tmp2
%result2 = zext i16 %result to i32
ret i32 %result2
}
; Test that load folding does not happen.
; CHECK-LABEL: fptosi_nofold
; CHECK-NOT: cvttsd2si {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal double @uitofp_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i16*
%load = load i16, i16* %addr, align 1
%result = uitofp i16 %load to double
ret double %result
}
; CHECK-LABEL: uitofp_fold
; CHECK: movzx {{.*}},WORD PTR [{{.*}}+0xc8]
define internal double @uitofp_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i16*
%load = load i16, i16* %addr, align 1
%tmp1 = uitofp i16 %load to double
%tmp2 = uitofp i16 %load to double
%result = fadd double %tmp1, %tmp2
ret double %result
}
; Test that load folding does not happen.
; CHECK-LABEL: uitofp_nofold
; CHECK-NOT: movzx {{.*}},WORD PTR [{{.*}}+0xc8]
define internal double @sitofp_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i16*
%load = load i16, i16* %addr, align 1
%result = sitofp i16 %load to double
ret double %result
}
; CHECK-LABEL: sitofp_fold
; CHECK: movsx {{.*}},WORD PTR [{{.*}}+0xc8]
define internal double @sitofp_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i16*
%load = load i16, i16* %addr, align 1
%tmp1 = sitofp i16 %load to double
%tmp2 = sitofp i16 %load to double
%result = fadd double %tmp1, %tmp2
ret double %result
}
; Test that load folding does not happen.
; CHECK-LABEL: sitofp_nofold
; CHECK-NOT: movsx {{.*}},WORD PTR [{{.*}}+0xc8]
define internal double @bitcast_i64_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i64*
%load = load i64, i64* %addr, align 1
%result = bitcast i64 %load to double
ret double %result
}
; CHECK-LABEL: bitcast_i64_fold
; CHECK: movq {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal double @bitcast_i64_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to i64*
%load = load i64, i64* %addr, align 1
%tmp1 = bitcast i64 %load to double
%tmp2 = bitcast i64 %load to double
%result = fadd double %tmp1, %tmp2
ret double %result
}
; Test that load folding does not happen.
; CHECK-LABEL: bitcast_i64_nofold
; CHECK-NOT: movq {{.*}},QWORD PTR [{{.*}}+0xc8]
define internal i64 @bitcast_double_fold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%result = bitcast double %load to i64
ret i64 %result
}
; CHECK-LABEL: bitcast_double_fold
; CHECK-NOT: QWORD PTR
; CHECK: mov {{.*}},DWORD PTR [{{.*}}+0xc8]
; CHECK: mov {{.*}},DWORD PTR [{{.*}}+0xcc]
; CHECK-NOT: QWORD PTR
define internal i64 @bitcast_double_nofold(i32 %arg) {
entry:
%ptr = add i32 %arg, 200
%addr = inttoptr i32 %ptr to double*
%load = load double, double* %addr, align 8
%tmp1 = bitcast double %load to i64
%tmp2 = bitcast double %load to i64
%result = add i64 %tmp1, %tmp2
ret i64 %result
}
; Test that load folding does not happen.
; CHECK-LABEL: bitcast_double_nofold
; CHECK: QWORD PTR
; CHECK: QWORD PTR