mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-05 13:30:38 +00:00
b8cd4d3d49
do for scalars. Patch contributed by Nicolas Capens This also generalizes the previous xforms to work on long double, now that isExactlyValue works for long double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54653 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
2.5 KiB
LLVM
94 lines
2.5 KiB
LLVM
; This test makes sure that mul instructions are properly eliminated.
|
|
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep mul
|
|
|
|
define i32 @test1(i32 %A) {
|
|
%B = mul i32 %A, 1 ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
}
|
|
|
|
define i32 @test2(i32 %A) {
|
|
; Should convert to an add instruction
|
|
%B = mul i32 %A, 2 ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
}
|
|
|
|
define i32 @test3(i32 %A) {
|
|
; This should disappear entirely
|
|
%B = mul i32 %A, 0 ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
}
|
|
|
|
define double @test4(double %A) {
|
|
; This is safe for FP
|
|
%B = mul double 1.000000e+00, %A ; <double> [#uses=1]
|
|
ret double %B
|
|
}
|
|
|
|
define i32 @test5(i32 %A) {
|
|
%B = mul i32 %A, 8 ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
}
|
|
|
|
define i8 @test6(i8 %A) {
|
|
%B = mul i8 %A, 8 ; <i8> [#uses=1]
|
|
%C = mul i8 %B, 8 ; <i8> [#uses=1]
|
|
ret i8 %C
|
|
}
|
|
|
|
define i32 @test7(i32 %i) {
|
|
%tmp = mul i32 %i, -1 ; <i32> [#uses=1]
|
|
ret i32 %tmp
|
|
}
|
|
|
|
define i64 @test8(i64 %i) {
|
|
; tmp = sub 0, %i
|
|
%j = mul i64 %i, -1 ; <i64> [#uses=1]
|
|
ret i64 %j
|
|
}
|
|
|
|
define i32 @test9(i32 %i) {
|
|
; %j = sub 0, %i
|
|
%j = mul i32 %i, -1 ; <i32> [#uses=1]
|
|
ret i32 %j
|
|
}
|
|
|
|
define i32 @test10(i32 %a, i32 %b) {
|
|
%c = icmp slt i32 %a, 0 ; <i1> [#uses=1]
|
|
%d = zext i1 %c to i32 ; <i32> [#uses=1]
|
|
; e = b & (a >> 31)
|
|
%e = mul i32 %d, %b ; <i32> [#uses=1]
|
|
ret i32 %e
|
|
}
|
|
|
|
define i32 @test11(i32 %a, i32 %b) {
|
|
%c = icmp sle i32 %a, -1 ; <i1> [#uses=1]
|
|
%d = zext i1 %c to i32 ; <i32> [#uses=1]
|
|
; e = b & (a >> 31)
|
|
%e = mul i32 %d, %b ; <i32> [#uses=1]
|
|
ret i32 %e
|
|
}
|
|
|
|
define i32 @test12(i8 %a, i32 %b) {
|
|
%c = icmp ugt i8 %a, 127 ; <i1> [#uses=1]
|
|
%d = zext i1 %c to i32 ; <i32> [#uses=1]
|
|
; e = b & (a >> 31)
|
|
%e = mul i32 %d, %b ; <i32> [#uses=1]
|
|
ret i32 %e
|
|
}
|
|
|
|
; PR2642
|
|
define internal void @test13(<4 x float>*) {
|
|
load <4 x float>* %0, align 1
|
|
mul <4 x float> %2, < float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00 >
|
|
store <4 x float> %3, <4 x float>* %0, align 1
|
|
ret void
|
|
}
|
|
|
|
define internal void @test14(<4 x float>*) {
|
|
load <4 x float>* %0, align 1
|
|
mul <4 x float> %2, zeroinitializer
|
|
store <4 x float> %3, <4 x float>* %0, align 1
|
|
ret void
|
|
}
|
|
|