mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 11:42:57 +01:00
250efba0f3
This improves the X86 cost model for small constants with large types. Before this commit we would even hoist trivial constants such as i96 2. This is related to <rdar://problem/17070936> llvm-svn: 210504
37 lines
1006 B
LLVM
37 lines
1006 B
LLVM
; RUN: opt -mtriple=x86_64-darwin-unknown -S -consthoist < %s | FileCheck %s
|
|
|
|
define i128 @test1(i128 %a) nounwind {
|
|
; CHECK-LABEL: test1
|
|
; CHECK: %const = bitcast i128 12297829382473034410122878 to i128
|
|
%1 = add i128 %a, 12297829382473034410122878
|
|
%2 = add i128 %1, 12297829382473034410122878
|
|
ret i128 %2
|
|
}
|
|
|
|
; Check that we don't hoist the shift value of a shift instruction.
|
|
define i512 @test2(i512 %a) nounwind {
|
|
; CHECK-LABEL: test2
|
|
; CHECK-NOT: %const = bitcast i512 504 to i512
|
|
%1 = shl i512 %a, 504
|
|
%2 = ashr i512 %1, 504
|
|
ret i512 %2
|
|
}
|
|
|
|
; Check that we don't hoist constants with a type larger than i128.
|
|
define i196 @test3(i196 %a) nounwind {
|
|
; CHECK-LABEL: test3
|
|
; CHECK-NOT: %const = bitcast i196 2 to i196
|
|
%1 = mul i196 %a, 2
|
|
%2 = mul i196 %1, 2
|
|
ret i196 %2
|
|
}
|
|
|
|
; Check that we don't hoist immediates with small values.
|
|
define i96 @test4(i96 %a) nounwind {
|
|
; CHECK-LABEL: test4
|
|
; CHECK-NOT: %const = bitcast i96 2 to i96
|
|
%1 = mul i96 %a, 2
|
|
%2 = add i96 %1, 2
|
|
ret i96 %2
|
|
}
|