[ConstantFolding] Tests for constrained compare intrinsics

This are tests extracted from https://reviews.llvm.org/D110322, committed
prior to that patch to show the change in behavior.
This commit is contained in:
Serge Pavlov 2021-12-22 17:12:54 +07:00
parent b55ea2fbc0
commit 185c80b89a
1 changed files with 116 additions and 0 deletions

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@ -417,6 +417,120 @@ entry:
}
; When exceptions are ignored, comparison of constants can be folded, even for (signaling) NaNs.
define i1 @cmp_eq_01() #0 {
; CHECK-LABEL: @cmp_eq_01(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f64(double 1.000000e+00, double 2.000000e+00, metadata !"oeq", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmp.f64(double 1.0, double 2.0, metadata !"oeq", metadata !"fpexcept.ignore") #0
ret i1 %result
}
define i1 @cmp_eq_02() #0 {
; CHECK-LABEL: @cmp_eq_02(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f64(double 2.000000e+00, double 2.000000e+00, metadata !"oeq", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmp.f64(double 2.0, double 2.0, metadata !"oeq", metadata !"fpexcept.ignore") #0
ret i1 %result
}
define i1 @cmp_eq_03() #0 {
; CHECK-LABEL: @cmp_eq_03(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f64(double 2.000000e+00, double 0x7FF8000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmp.f64(double 2.0, double 0x7ff8000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #0
ret i1 %result
}
define i1 @cmp_eq_04() #0 {
; CHECK-LABEL: @cmp_eq_04(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f64(double 2.000000e+00, double 0x7FF4000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmp.f64(double 2.0, double 0x7ff4000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #0
ret i1 %result
}
define i1 @cmp_eq_05() #0 {
; CHECK-LABEL: @cmp_eq_05(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f64(double 2.000000e+00, double 0x7FF8000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmps.f64(double 2.0, double 0x7ff8000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #0
ret i1 %result
}
define i1 @cmp_eq_06() #0 {
; CHECK-LABEL: @cmp_eq_06(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f64(double 2.000000e+00, double 0x7FF4000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmps.f64(double 2.0, double 0x7ff4000000000000, metadata !"oeq", metadata !"fpexcept.ignore") #0
ret i1 %result
}
; Compare with SNAN is NOT folded if the exception behavior mode is not 'ignore'.
define i1 @cmp_eq_nan_01() #0 {
; CHECK-LABEL: @cmp_eq_nan_01(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f64(double 0x7FF4000000000000, double 1.000000e+00, metadata !"oeq", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmp.f64(double 0x7ff4000000000000, double 1.0, metadata !"oeq", metadata !"fpexcept.strict") #0
ret i1 %result
}
define i1 @cmp_eq_nan_02() #0 {
; CHECK-LABEL: @cmp_eq_nan_02(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f64(double 0x7FF4000000000000, double 1.000000e+00, metadata !"oeq", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmps.f64(double 0x7ff4000000000000, double 1.0, metadata !"oeq", metadata !"fpexcept.strict") #0
ret i1 %result
}
; Compare with QNAN is folded for fcmp but is NOT folded for fcmps if the exception behavior mode is not 'ignore'.
define i1 @cmp_eq_nan_03() #0 {
; CHECK-LABEL: @cmp_eq_nan_03(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmp.f64(double 0x7FF8000000000000, double 1.000000e+00, metadata !"oeq", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmp.f64(double 0x7ff8000000000000, double 1.0, metadata !"oeq", metadata !"fpexcept.strict") #0
ret i1 %result
}
define i1 @cmp_eq_nan_04() #0 {
; CHECK-LABEL: @cmp_eq_nan_04(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RESULT:%.*]] = call i1 @llvm.experimental.constrained.fcmps.f64(double 0x7FF8000000000000, double 1.000000e+00, metadata !"oeq", metadata !"fpexcept.strict") #[[ATTR0]]
; CHECK-NEXT: ret i1 [[RESULT]]
;
entry:
%result = call i1 @llvm.experimental.constrained.fcmps.f64(double 0x7ff8000000000000, double 1.0, metadata !"oeq", metadata !"fpexcept.strict") #0
ret i1 %result
}
attributes #0 = { strictfp }
declare double @llvm.experimental.constrained.nearbyint.f64(double, metadata, metadata)
@ -435,4 +549,6 @@ declare double @llvm.experimental.constrained.fdiv.f64(double, double, metadata,
declare double @llvm.experimental.constrained.frem.f64(double, double, metadata, metadata)
declare double @llvm.experimental.constrained.fma.f64(double, double, double, metadata, metadata)
declare double @llvm.experimental.constrained.fmuladd.f64(double, double, double, metadata, metadata)
declare i1 @llvm.experimental.constrained.fcmp.f64(double, double, metadata, metadata)
declare i1 @llvm.experimental.constrained.fcmps.f64(double, double, metadata, metadata)