forked from OSchip/llvm-project
53 lines
1.4 KiB
LLVM
53 lines
1.4 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||
|
|
; RUN: opt < %s -instsimplify -S | FileCheck %s
|
||
|
|
|
||
|
|
define float @fdiv_constant_fold() {
|
||
|
|
; CHECK-LABEL: @fdiv_constant_fold(
|
||
|
|
; CHECK-NEXT: ret float 1.500000e+00
|
||
|
|
;
|
||
|
|
%f = fdiv float 3.0, 2.0
|
||
|
|
ret float %f
|
||
|
|
}
|
||
|
|
|
||
|
|
define float @frem_constant_fold() {
|
||
|
|
; CHECK-LABEL: @frem_constant_fold(
|
||
|
|
; CHECK-NEXT: ret float 1.000000e+00
|
||
|
|
;
|
||
|
|
%f = frem float 3.0, 2.0
|
||
|
|
ret float %f
|
||
|
|
}
|
||
|
|
|
||
|
|
define double @fmul_fdiv_common_operand(double %x, double %y) {
|
||
|
|
; CHECK-LABEL: @fmul_fdiv_common_operand(
|
||
|
|
; CHECK-NEXT: ret double %x
|
||
|
|
;
|
||
|
|
%m = fmul double %x, %y
|
||
|
|
%d = fdiv reassoc nnan double %m, %y
|
||
|
|
ret double %d
|
||
|
|
}
|
||
|
|
|
||
|
|
; Negative test - the fdiv must be reassociative and not allow NaNs.
|
||
|
|
|
||
|
|
define double @fmul_fdiv_common_operand_too_strict(double %x, double %y) {
|
||
|
|
; CHECK-LABEL: @fmul_fdiv_common_operand_too_strict(
|
||
|
|
; CHECK-NEXT: [[M:%.*]] = fmul fast double %x, %y
|
||
|
|
; CHECK-NEXT: [[D:%.*]] = fdiv reassoc double [[M]], %y
|
||
|
|
; CHECK-NEXT: ret double [[D]]
|
||
|
|
;
|
||
|
|
%m = fmul fast double %x, %y
|
||
|
|
%d = fdiv reassoc double %m, %y
|
||
|
|
ret double %d
|
||
|
|
}
|
||
|
|
|
||
|
|
; Commute the fmul operands. Use a vector type to verify that works too.
|
||
|
|
|
||
|
|
define <2 x float> @fmul_fdiv_common_operand_commute_vec(<2 x float> %x, <2 x float> %y) {
|
||
|
|
; CHECK-LABEL: @fmul_fdiv_common_operand_commute_vec(
|
||
|
|
; CHECK-NEXT: ret <2 x float> %x
|
||
|
|
;
|
||
|
|
%m = fmul <2 x float> %y, %x
|
||
|
|
%d = fdiv fast <2 x float> %m, %y
|
||
|
|
ret <2 x float> %d
|
||
|
|
}
|
||
|
|
|