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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=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
}
; The constant expression version of this used to crash llvm-as.
define <2 x i1> @pr6096() {
; CHECK-LABEL: @pr6096(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%fdiv = fdiv <2 x float> undef, <float 1.000000e+00, float 1.000000e+00>
%fcmp = fcmp ole <2 x float> %fdiv, zeroinitializer
ret <2 x i1> %fcmp
}
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