a71147dd28
When promoted value, it is meaningless to copy value from reg to another reg with the same type. This PR add additional check for this cases to reduce the code size. Fixes: #80053.
44 lines
1.2 KiB
LLVM
44 lines
1.2 KiB
LLVM
; RUN: llc < %s -fast-isel -O0 | FileCheck %s
|
|
|
|
target triple = "wasm32-unknown-unknown"
|
|
|
|
; CHECK-LABEL: gh_80053: # @gh_80053
|
|
; CHECK-NEXT: .functype gh_80053 (i32) -> (i32)
|
|
; CHECK-NEXT: .local i32, i32, i32, i32, i32, i32
|
|
; CHECK: i32.const 0
|
|
; CHECK-NEXT: local.set 1
|
|
; CHECK-NEXT: local.get 0
|
|
; CHECK-NEXT: local.get 1
|
|
; CHECK-NEXT: i32.eq
|
|
; CHECK-NEXT: local.set 2
|
|
; CHECK-NEXT: i32.const 1
|
|
; CHECK-NEXT: local.set 3
|
|
; CHECK-NEXT: local.get 2
|
|
; CHECK-NEXT: local.get 3
|
|
; CHECK-NEXT: i32.and
|
|
; CHECK-NEXT: local.set 4
|
|
; CHECK-NEXT: block
|
|
; CHECK-NEXT: local.get 4
|
|
; CHECK-NEXT: i32.eqz
|
|
; CHECK-NEXT: br_if 0 # 0: down to label0
|
|
; CHECK: i32.const 0
|
|
; CHECK-NEXT: local.set 5
|
|
; CHECK-NEXT: local.get 5
|
|
; CHECK-NEXT: return
|
|
; CHECK-NEXT: .LBB0_2: # %BB03
|
|
; CHECK-NEXT: end_block # label0:
|
|
; CHECK-NEXT: i32.const 1
|
|
; CHECK-NEXT: local.set 6
|
|
; CHECK-NEXT: local.get 6
|
|
; CHECK-NEXT: return
|
|
; CHECK-NEXT: end_function
|
|
define i1 @gh_80053(ptr) {
|
|
BB01:
|
|
%eq = icmp eq ptr %0, null
|
|
br i1 %eq, label %BB02, label %BB03
|
|
BB02:
|
|
ret i1 0
|
|
BB03:
|
|
ret i1 1
|
|
}
|