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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=instsimplify -S < %s | FileCheck %s
; Fixes PR20832
; Make sure that we correctly fold a fused multiply-add where operands
; are all finite constants and addend is zero.
declare double @llvm.fma.f64(double, double, double)
define double @PR20832() {
; CHECK-LABEL: @PR20832(
; CHECK-NEXT: ret double 5.600000e+01
;
%1 = call double @llvm.fma.f64(double 7.0, double 8.0, double 0.0)
ret double %1
}
; Test builtin fma with all finite non-zero constants.
define double @test_all_finite() {
; CHECK-LABEL: @test_all_finite(
; CHECK-NEXT: ret double 6.100000e+01
;
%1 = call double @llvm.fma.f64(double 7.0, double 8.0, double 5.0)
ret double %1
}
; Test builtin fma with a +/-NaN addend.
define double @test_NaN_addend() {
; CHECK-LABEL: @test_NaN_addend(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 8.0, double 0x7FF8000000000000)
ret double %1
}
define double @test_NaN_addend_2() {
; CHECK-LABEL: @test_NaN_addend_2(
; CHECK-NEXT: ret double 0xFFF8000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 8.0, double 0xFFF8000000000000)
ret double %1
}
; Test builtin fma with a +/-Inf addend.
define double @test_Inf_addend() {
; CHECK-LABEL: @test_Inf_addend(
; CHECK-NEXT: ret double 0x7FF0000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 8.0, double 0x7FF0000000000000)
ret double %1
}
define double @test_Inf_addend_2() {
; CHECK-LABEL: @test_Inf_addend_2(
; CHECK-NEXT: ret double 0xFFF0000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 8.0, double 0xFFF0000000000000)
ret double %1
}
; Test builtin fma with one of the operands to the multiply being +/-NaN.
define double @test_NaN_1() {
; CHECK-LABEL: @test_NaN_1(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0x7FF8000000000000, double 8.0, double 0.0)
ret double %1
}
define double @test_NaN_2() {
; CHECK-LABEL: @test_NaN_2(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 0x7FF8000000000000, double 0.0)
ret double %1
}
define double @test_NaN_3() {
; CHECK-LABEL: @test_NaN_3(
; CHECK-NEXT: ret double 0xFFF8000000000000
;
%1 = call double @llvm.fma.f64(double 0xFFF8000000000000, double 8.0, double 0.0)
ret double %1
}
define double @test_NaN_4() {
; CHECK-LABEL: @test_NaN_4(
; CHECK-NEXT: ret double 0xFFF8000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 0xFFF8000000000000, double 0.0)
ret double %1
}
; Test builtin fma with one of the operands to the multiply being +/-Inf.
define double @test_Inf_1() {
; CHECK-LABEL: @test_Inf_1(
; CHECK-NEXT: ret double 0x7FF0000000000000
;
%1 = call double @llvm.fma.f64(double 0x7FF0000000000000, double 8.0, double 0.0)
ret double %1
}
define double @test_Inf_2() {
; CHECK-LABEL: @test_Inf_2(
; CHECK-NEXT: ret double 0x7FF0000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 0x7FF0000000000000, double 0.0)
ret double %1
}
define double @test_Inf_3() {
; CHECK-LABEL: @test_Inf_3(
; CHECK-NEXT: ret double 0xFFF0000000000000
;
%1 = call double @llvm.fma.f64(double 0xFFF0000000000000, double 8.0, double 0.0)
ret double %1
}
define double @test_Inf_4() {
; CHECK-LABEL: @test_Inf_4(
; CHECK-NEXT: ret double 0xFFF0000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 0xFFF0000000000000, double 0.0)
ret double %1
}
; -inf + inf --> NaN
define double @inf_product_opposite_inf_addend_1() {
; CHECK-LABEL: @inf_product_opposite_inf_addend_1(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 0xFFF0000000000000, double 0x7FF0000000000000)
ret double %1
}
; inf + -inf --> NaN
define double @inf_product_opposite_inf_addend_2() {
; CHECK-LABEL: @inf_product_opposite_inf_addend_2(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 7.0, double 0x7FF0000000000000, double 0xFFF0000000000000)
ret double %1
}
; -inf + inf --> NaN
define double @inf_product_opposite_inf_addend_3() {
; CHECK-LABEL: @inf_product_opposite_inf_addend_3(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0xFFF0000000000000, double 42.0, double 0x7FF0000000000000)
ret double %1
}
; inf + -inf --> NaN
define double @inf_product_opposite_inf_addend_4() {
; CHECK-LABEL: @inf_product_opposite_inf_addend_4(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0x7FF0000000000000, double 42.0, double 0xFFF0000000000000)
ret double %1
}
; 0 * -inf --> NaN
define double @inf_times_zero_1() {
; CHECK-LABEL: @inf_times_zero_1(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0.0, double 0xFFF0000000000000, double 42.0)
ret double %1
}
; 0 * inf --> NaN
define double @inf_times_zero_2() {
; CHECK-LABEL: @inf_times_zero_2(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0.0, double 0x7FF0000000000000, double 42.0)
ret double %1
}
; -inf * 0 --> NaN
define double @inf_times_zero_3() {
; CHECK-LABEL: @inf_times_zero_3(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0xFFF0000000000000, double 0.0, double 42.0)
ret double %1
}
; inf * 0 --> NaN
define double @inf_times_zero_4() {
; CHECK-LABEL: @inf_times_zero_4(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0x7FF0000000000000, double 0.0, double 42.0)
ret double %1
}
; -0 * -inf --> NaN
define double @inf_times_zero_5() {
; CHECK-LABEL: @inf_times_zero_5(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double -0.0, double 0xFFF0000000000000, double 42.0)
ret double %1
}
; -0 * inf --> NaN
define double @inf_times_zero_6() {
; CHECK-LABEL: @inf_times_zero_6(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double -0.0, double 0x7FF0000000000000, double 42.0)
ret double %1
}
; -inf * -0 --> NaN
define double @inf_times_zero_7() {
; CHECK-LABEL: @inf_times_zero_7(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0xFFF0000000000000, double -0.0, double 42.0)
ret double %1
}
; inf * -0 --> NaN
define double @inf_times_zero_8() {
; CHECK-LABEL: @inf_times_zero_8(
; CHECK-NEXT: ret double 0x7FF8000000000000
;
%1 = call double @llvm.fma.f64(double 0x7FF0000000000000, double -0.0, double 42.0)
ret double %1
}
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