999deef63d
This patch fixes a crash in Clang that occurs when the compiler retrieves the element type of a complex type but receives a sugared type. See example here: https://godbolt.org/z/cdbdeMcaT This patch fixes the crash.
136 lines
4.7 KiB
C
136 lines
4.7 KiB
C
// RUN: %clang_cc1 %s -O0 -emit-llvm -triple x86_64-unknown-unknown \
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// RUN: -verify -complex-range=promoted -o - | FileCheck %s
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// RUN: %clang_cc1 %s -O0 -emit-llvm -triple x86_64-unknown-unknown \
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// RUN: -verify=nopromotion -complex-range=promoted -target-feature -x87 \
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// RUN: -o - | FileCheck %s --check-prefix=NOX87
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// RUN: %clang_cc1 %s -O0 -emit-llvm -triple x86_64-unknown-windows \
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// RUN: -verify=nopromotion -complex-range=promoted -o - \
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// RUN: | FileCheck %s --check-prefix=NOX87
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// RUN: %clang_cc1 %s -O0 -emit-llvm -triple x86_64-unknown-windows \
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// RUN: -verify=nopromotion -complex-range=promoted -target-feature -x87 \
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// RUN: -o - | FileCheck %s --check-prefix=NOX87
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// expected-no-diagnostics
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// CHECK-LABEL: define dso_local <2 x float> @divd
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_Complex float divd(_Complex float a, _Complex float b) {
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// CHECK: fpext float {{.*}} to double
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// CHECK: fpext float {{.*}} to double
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// CHECK: fdiv double
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// CHECK: fdiv double
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// CHECK: fptrunc double {{.*}} to float
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// CHECK: fptrunc double {{.*}} to float
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// NOX87: fpext float {{.*}} to double
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// NOX87: fpext float {{.*}} to double
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// NOX87: fdiv double
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// NOX87: fdiv double
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// NOX87: fptrunc double {{.*}} to float
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// NOX87: fptrunc double {{.*}} to float
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return a / b;
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}
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// CHECK-LABEL: define dso_local { double, double } @divf
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_Complex double divf(_Complex double a, _Complex double b) {
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// CHECK: fpext double {{.*}} to x86_fp80
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// CHECK: fpext double {{.*}} to x86_fp80
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// CHECK: fdiv x86_fp80
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// CHECK: fdiv x86_fp80
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// CHECK: fptrunc x86_fp80
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// CHECK: fptrunc x86_fp80
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// NOX87: call double @llvm.fabs.f64(double {{.*}})
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// NOX87-NEXT: call double @llvm.fabs.f64(double {{.*}})
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// NOX87-NEXT: fcmp ugt double %{{.*}}, {{.*}}
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// NOX87-NEXT: br i1 {{.*}}, label
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// NOX87: abs_rhsr_greater_or_equal_abs_rhsi:
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fadd double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fadd double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fsub double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: br label {{.*}}
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// NOX87: abs_rhsr_less_than_abs_rhsi:
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fadd double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fadd double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fsub double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: br label
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// NOX87: complex_div:
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// NOX87-NEXT: phi double
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// NOX87-NEXT: phi double
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// NOX87-NEXT: getelementptr inbounds nuw { double, double }, ptr {{.*}}, i32 0, i32 0
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// NOX87-NEXT: getelementptr inbounds nuw { double, double }, ptr {{.*}}, i32 0, i32 1
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// NOX87-NEXT: store double
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// NOX87-NEXT: store double
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return a / b; // nopromotion-warning{{excess precision is requested but the target does not support excess precision which may result in observable differences in complex division behavior}}
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}
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// This test ensures that Clang does not crash when complex element types
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// require desugaring under -complex-range=promoted. Previously, a sugared
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// typedef element type (e.g., 'typedef double a') caused a crash during
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// complex range evaluation in both Sema and CodeGen.
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typedef double a;
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_Complex double *b;
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// CHECK-LABEL: define dso_local void @DivideByComplexZero
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void DivideByComplexZero() {
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// CHECK: fpext double {{.*}} to x86_fp80
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// CHECK: fpext double {{.*}} to x86_fp80
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// CHECK: fmul x86_fp80
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// CHECK: fmul x86_fp80
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// CHECK: fadd x86_fp80
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// CHECK: fmul x86_fp80
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// CHECK: fmul x86_fp80
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// CHECK: fsub x86_fp80
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// CHECK: fdiv x86_fp80
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// CHECK: fdiv x86_fp80
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// CHECK: fptrunc x86_fp80
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// CHECK: fptrunc x86_fp80
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// NOX87: call double @llvm.fabs.f64(double {{.*}})
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// NOX87-NEXT: call double @llvm.fabs.f64(double {{.*}}
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// NOX87-NEXT: fcmp ugt double {{.*}}, {{.*}}
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// NOX87-NEXT: br i1 {{.*}}, label
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// NOX87: abs_rhsr_greater_or_equal_abs_rhsi:
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fadd double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fsub double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: br label {{.*}}
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// NOX87: abs_rhsr_less_than_abs_rhsi:
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fadd double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: fmul double
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// NOX87-NEXT: fsub double
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// NOX87-NEXT: fdiv double
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// NOX87-NEXT: br label {{.*}}
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// NOX87: complex_div:
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// NOX87-NEXT: phi double
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// NOX87-NEXT: phi double
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// NOX87-NEXT: getelementptr inbounds nuw { double, double }, ptr {{.*}}, i32 0, i32 0
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// NOX87-NEXT: getelementptr inbounds nuw { double, double }, ptr {{.*}}, i32 0, i32 1
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// NOX87-NEXT: store double
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// NOX87-NEXT: store double
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*b /= 1.0iF * (a)0;
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}
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