maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[InstCombine][InstSimplify] add tests for sign of maxnum; NFC 

More coverage for D83601.
This commit is contained in:
Sanjay Patel 2020-07-13 16:02:10 -04:00
parent 84a1bc7f2c
commit 9cc669d22d
3 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
llvm/test/Transforms/InstCombine/copysign.ll
View File

@ -3,6 +3,7 @@
declare float @llvm.fabs.f32(float)
declare float @llvm.copysign.f32(float, float)
declare float @llvm.maxnum.f32(float, float)
declare <3 x double> @llvm.copysign.v3f64(<3 x double>, <3 x double>)
define float @positive_sign_arg(float %x) {
@ -63,6 +64,18 @@ define <3 x double> @known_positive_sign_arg_vec(<3 x double> %x, <3 x i32> %y)
ret <3 x double> %r
}
; FIXME: maxnum(-0.0, 0.0) can return -0.0.
define float @not_known_positive_sign_arg(float %x, float %y) {
; CHECK-LABEL: @not_known_positive_sign_arg(
; CHECK-NEXT: [[TMP1:%.*]] = call ninf float @llvm.fabs.f32(float [[Y:%.*]])
; CHECK-NEXT: ret float [[TMP1]]
;
%max = call float @llvm.maxnum.f32(float %x, float 0.0)
%r = call ninf float @llvm.copysign.f32(float %y, float %max)
ret float %r
}
; The magnitude operand of the 1st copysign is irrelevant.
; copysign(x, copysign(y, z)) --> copysign(x, z)

10
llvm/test/Transforms/InstSimplify/floating-point-arithmetic.ll
View File

@ -1383,3 +1383,13 @@ define float @maxnum_with_negzero_op_commute(float %a) {
%fabs = call float @llvm.fabs.f32(float %max)
ret float %fabs
}
define float @maxnum_with_pos_one_op(float %a) {
; CHECK-LABEL: @maxnum_with_pos_one_op(
; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float [[A:%.*]], float 1.000000e+00)
; CHECK-NEXT: ret float [[MAX]]
;
%max = call float @llvm.maxnum.f32(float %a, float 1.0)
%fabs = call float @llvm.fabs.f32(float %max)
ret float %fabs
}

9
llvm/test/Transforms/InstSimplify/floating-point-compare.ll
View File

@ -212,6 +212,15 @@ define i1 @orderedLessZero_fdiv(float %x) {
ret i1 %uge
}
define i1 @orderedLessZero_maxnum(float %x) {
; CHECK-LABEL: @orderedLessZero_maxnum(
; CHECK-NEXT: ret i1 true
;
%d = call float @llvm.maxnum.f32(float %x, float 0.0)
%uge = fcmp uge float %d, 0.0
ret i1 %uge
}
define i1 @orderedLessZeroExpExt(float) {
; CHECK-LABEL: @orderedLessZeroExpExt(
; CHECK-NEXT: ret i1 true