112 lines
4.1 KiB
LLVM
112 lines
4.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine < %s | FileCheck %s
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declare double @llvm.exp.f64(double) nounwind readnone speculatable
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declare void @use(double)
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; exp(a) * exp(b) no reassoc flags
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define double @exp_a_exp_b(double %a, double %b) {
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; CHECK-LABEL: @exp_a_exp_b(
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; CHECK-NEXT: [[T:%.*]] = call double @llvm.exp.f64(double [[A:%.*]])
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; CHECK-NEXT: [[T1:%.*]] = call double @llvm.exp.f64(double [[B:%.*]])
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; CHECK-NEXT: [[MUL:%.*]] = fmul double [[T]], [[T1]]
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; CHECK-NEXT: ret double [[MUL]]
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;
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%t = call double @llvm.exp.f64(double %a)
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%t1 = call double @llvm.exp.f64(double %b)
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%mul = fmul double %t, %t1
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ret double %mul
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}
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; exp(a) * exp(b) reassoc, multiple uses
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define double @exp_a_exp_b_multiple_uses(double %a, double %b) {
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; CHECK-LABEL: @exp_a_exp_b_multiple_uses(
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; CHECK-NEXT: [[T1:%.*]] = call double @llvm.exp.f64(double [[B:%.*]])
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[A:%.*]], [[B]]
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; CHECK-NEXT: [[TMP2:%.*]] = call reassoc double @llvm.exp.f64(double [[TMP1]])
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; CHECK-NEXT: call void @use(double [[T1]])
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; CHECK-NEXT: ret double [[TMP2]]
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;
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%t = call double @llvm.exp.f64(double %a)
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%t1 = call double @llvm.exp.f64(double %b)
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%mul = fmul reassoc double %t, %t1
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call void @use(double %t1)
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ret double %mul
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}
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; exp(a) * exp(b) reassoc, both with multiple uses
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define double @exp_a_exp_b_multiple_uses_both(double %a, double %b) {
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; CHECK-LABEL: @exp_a_exp_b_multiple_uses_both(
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; CHECK-NEXT: [[T:%.*]] = call double @llvm.exp.f64(double [[A:%.*]])
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; CHECK-NEXT: [[T1:%.*]] = call double @llvm.exp.f64(double [[B:%.*]])
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; CHECK-NEXT: [[MUL:%.*]] = fmul reassoc double [[T]], [[T1]]
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; CHECK-NEXT: call void @use(double [[T]])
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; CHECK-NEXT: call void @use(double [[T1]])
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; CHECK-NEXT: ret double [[MUL]]
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;
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%t = call double @llvm.exp.f64(double %a)
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%t1 = call double @llvm.exp.f64(double %b)
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%mul = fmul reassoc double %t, %t1
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call void @use(double %t)
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call void @use(double %t1)
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ret double %mul
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}
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; exp(a) * exp(b) => exp(a+b) with reassoc
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define double @exp_a_exp_b_reassoc(double %a, double %b) {
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; CHECK-LABEL: @exp_a_exp_b_reassoc(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = call reassoc double @llvm.exp.f64(double [[TMP1]])
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; CHECK-NEXT: ret double [[TMP2]]
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;
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%t = call double @llvm.exp.f64(double %a)
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%t1 = call double @llvm.exp.f64(double %b)
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%mul = fmul reassoc double %t, %t1
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ret double %mul
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}
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define double @exp_a_a(double %a) {
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; CHECK-LABEL: @exp_a_a(
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; CHECK-NEXT: [[T:%.*]] = fadd reassoc double [[A:%.*]], [[A]]
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; CHECK-NEXT: [[E:%.*]] = call reassoc double @llvm.exp.f64(double [[T]])
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; CHECK-NEXT: ret double [[E]]
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;
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%t = call double @llvm.exp.f64(double %a)
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%m = fmul reassoc double %t, %t
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ret double %m
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}
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; negative test
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define double @exp_a_a_extra_use(double %a) {
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; CHECK-LABEL: @exp_a_a_extra_use(
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; CHECK-NEXT: [[T:%.*]] = call double @llvm.exp.f64(double [[A:%.*]])
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; CHECK-NEXT: call void @use(double [[T]])
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; CHECK-NEXT: [[M:%.*]] = fmul reassoc double [[T]], [[T]]
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; CHECK-NEXT: ret double [[M]]
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;
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%t = call double @llvm.exp.f64(double %a)
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call void @use(double %t)
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%m = fmul reassoc double %t, %t
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ret double %m
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}
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; exp(a) * exp(b) * exp(c) * exp(d) => exp(a+b+c+d) with reassoc
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define double @exp_a_exp_b_exp_c_exp_d_fast(double %a, double %b, double %c, double %d) {
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; CHECK-LABEL: @exp_a_exp_b_exp_c_exp_d_fast(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd reassoc double [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = fadd reassoc double [[TMP1]], [[C:%.*]]
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; CHECK-NEXT: [[TMP3:%.*]] = fadd reassoc double [[TMP2]], [[D:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = call reassoc double @llvm.exp.f64(double [[TMP3]])
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; CHECK-NEXT: ret double [[TMP4]]
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;
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%t = call double @llvm.exp.f64(double %a)
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%t1 = call double @llvm.exp.f64(double %b)
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%mul = fmul reassoc double %t, %t1
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%t2 = call double @llvm.exp.f64(double %c)
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%mul1 = fmul reassoc double %mul, %t2
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%t3 = call double @llvm.exp.f64(double %d)
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%mul2 = fmul reassoc double %mul1, %t3
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ret double %mul2
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}
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