xref: /aosp_15_r20/external/llvm/test/Transforms/InstCombine/log-pow.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -instcombine -S | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdefine double @log_pow(double %x, double %y) {
4*9880d681SAndroid Build Coastguard Worker  %pow = call fast double @llvm.pow.f64(double %x, double %y)
5*9880d681SAndroid Build Coastguard Worker  %call = call fast double @log(double %pow)
6*9880d681SAndroid Build Coastguard Worker  ret double %call
7*9880d681SAndroid Build Coastguard Worker}
8*9880d681SAndroid Build Coastguard Worker
9*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: define double @log_pow(
10*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %log = call fast double @log(double %x)
11*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %mul = fmul fast double %log, %y
12*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  ret double %mul
13*9880d681SAndroid Build Coastguard Worker
14*9880d681SAndroid Build Coastguard Workerdefine double @log_pow_not_fast(double %x, double %y) {
15*9880d681SAndroid Build Coastguard Worker  %pow = call double @llvm.pow.f64(double %x, double %y)
16*9880d681SAndroid Build Coastguard Worker  %call = call fast double @log(double %pow)
17*9880d681SAndroid Build Coastguard Worker  ret double %call
18*9880d681SAndroid Build Coastguard Worker}
19*9880d681SAndroid Build Coastguard Worker
20*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: define double @log_pow_not_fast(
21*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %pow = call double @llvm.pow.f64(double %x, double %y)
22*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %call = call fast double @log(double %pow)
23*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  ret double %call
24*9880d681SAndroid Build Coastguard Worker
25*9880d681SAndroid Build Coastguard Workerdefine double @function_pointer(double ()* %fptr, double %p1) {
26*9880d681SAndroid Build Coastguard Worker  %call1 = call double %fptr()
27*9880d681SAndroid Build Coastguard Worker  %pow = call double @log(double %call1)
28*9880d681SAndroid Build Coastguard Worker  ret double %pow
29*9880d681SAndroid Build Coastguard Worker}
30*9880d681SAndroid Build Coastguard Worker
31*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @function_pointer
32*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %call1 = call double %fptr()
33*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %pow = call double @log(double %call1)
34*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  ret double %pow
35*9880d681SAndroid Build Coastguard Worker
36*9880d681SAndroid Build Coastguard Workerdefine double @log_exp2(double %x) {
37*9880d681SAndroid Build Coastguard Worker  %call2 = call fast double @exp2(double %x)
38*9880d681SAndroid Build Coastguard Worker  %call3 = call fast double @log(double %call2)
39*9880d681SAndroid Build Coastguard Worker  ret double %call3
40*9880d681SAndroid Build Coastguard Worker}
41*9880d681SAndroid Build Coastguard Worker
42*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @log_exp2
43*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %call2 = call fast double @exp2(double %x)
44*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %logmul = fmul fast double %x, 0x3FE62E42FEFA39EF
45*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  ret double %logmul
46*9880d681SAndroid Build Coastguard Worker
47*9880d681SAndroid Build Coastguard Workerdefine double @log_exp2_not_fast(double %x) {
48*9880d681SAndroid Build Coastguard Worker  %call2 = call double @exp2(double %x)
49*9880d681SAndroid Build Coastguard Worker  %call3 = call fast double @log(double %call2)
50*9880d681SAndroid Build Coastguard Worker  ret double %call3
51*9880d681SAndroid Build Coastguard Worker}
52*9880d681SAndroid Build Coastguard Worker
53*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @log_exp2_not_fast
54*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %call2 = call double @exp2(double %x)
55*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  %call3 = call fast double @log(double %call2)
56*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:  ret double %call3
57*9880d681SAndroid Build Coastguard Worker
58*9880d681SAndroid Build Coastguard Workerdeclare double @log(double)
59*9880d681SAndroid Build Coastguard Workerdeclare double @exp2(double)
60*9880d681SAndroid Build Coastguard Workerdeclare double @llvm.pow.f64(double, double)
61*9880d681SAndroid Build Coastguard Worker
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