mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
2954f936f3
The combine for mul x, pow2 +/- 1 is unchanged. Test cases for both combines as well as mul x, pow2 have been added as well. llvm-svn: 212044
124 lines
2.1 KiB
LLVM
124 lines
2.1 KiB
LLVM
; RUN: llc < %s -march=aarch64 | FileCheck %s
|
|
|
|
; Convert mul x, pow2 to shift.
|
|
; Convert mul x, pow2 +/- 1 to shift + add/sub.
|
|
|
|
define i32 @test2(i32 %x) {
|
|
; CHECK-LABEL: test2
|
|
; CHECK: lsl w0, w0, #1
|
|
|
|
%mul = shl nsw i32 %x, 1
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @test3(i32 %x) {
|
|
; CHECK-LABEL: test3
|
|
; CHECK: add w0, w0, w0, lsl #1
|
|
|
|
%mul = mul nsw i32 %x, 3
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @test4(i32 %x) {
|
|
; CHECK-LABEL: test4
|
|
; CHECK: lsl w0, w0, #2
|
|
|
|
%mul = shl nsw i32 %x, 2
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @test5(i32 %x) {
|
|
; CHECK-LABEL: test5
|
|
; CHECK: add w0, w0, w0, lsl #2
|
|
|
|
|
|
%mul = mul nsw i32 %x, 5
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @test7(i32 %x) {
|
|
; CHECK-LABEL: test7
|
|
; CHECK: lsl {{w[0-9]+}}, w0, #3
|
|
; CHECK: sub w0, {{w[0-9]+}}, w0
|
|
|
|
%mul = mul nsw i32 %x, 7
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @test8(i32 %x) {
|
|
; CHECK-LABEL: test8
|
|
; CHECK: lsl w0, w0, #3
|
|
|
|
%mul = shl nsw i32 %x, 3
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @test9(i32 %x) {
|
|
; CHECK-LABEL: test9
|
|
; CHECK: add w0, w0, w0, lsl #3
|
|
|
|
%mul = mul nsw i32 %x, 9
|
|
ret i32 %mul
|
|
}
|
|
|
|
; Convert mul x, -pow2 to shift.
|
|
; Convert mul x, -(pow2 +/- 1) to shift + add/sub.
|
|
|
|
define i32 @ntest2(i32 %x) {
|
|
; CHECK-LABEL: ntest2
|
|
; CHECK: neg w0, w0, lsl #1
|
|
|
|
%mul = mul nsw i32 %x, -2
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @ntest3(i32 %x) {
|
|
; CHECK-LABEL: ntest3
|
|
; CHECK: add {{w[0-9]+}}, w0, w0, lsl #1
|
|
; CHECK: neg w0, {{w[0-9]+}}
|
|
|
|
%mul = mul nsw i32 %x, -3
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @ntest4(i32 %x) {
|
|
; CHECK-LABEL: ntest4
|
|
; CHECK:neg w0, w0, lsl #2
|
|
|
|
%mul = mul nsw i32 %x, -4
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @ntest5(i32 %x) {
|
|
; CHECK-LABEL: ntest5
|
|
; CHECK: add {{w[0-9]+}}, w0, w0, lsl #2
|
|
; CHECK: neg w0, {{w[0-9]+}}
|
|
%mul = mul nsw i32 %x, -5
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @ntest7(i32 %x) {
|
|
; CHECK-LABEL: ntest7
|
|
; CHECK: sub w0, w0, w0, lsl #3
|
|
|
|
%mul = mul nsw i32 %x, -7
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @ntest8(i32 %x) {
|
|
; CHECK-LABEL: ntest8
|
|
; CHECK: neg w0, w0, lsl #3
|
|
|
|
%mul = mul nsw i32 %x, -8
|
|
ret i32 %mul
|
|
}
|
|
|
|
define i32 @ntest9(i32 %x) {
|
|
; CHECK-LABEL: ntest9
|
|
; CHECK: add {{w[0-9]+}}, w0, w0, lsl #3
|
|
; CHECK: neg w0, {{w[0-9]+}}
|
|
|
|
%mul = mul nsw i32 %x, -9
|
|
ret i32 %mul
|
|
}
|