91 lines
1.7 KiB
LLVM
91 lines
1.7 KiB
LLVM
; RUN: llc %s -o - -O1 -debug-only=consthoist 2>&1 | FileCheck %s
|
|
; REQUIRES: asserts
|
|
|
|
target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
|
|
target triple = "thumbv6m-apple-ios8.0.0"
|
|
|
|
declare void @g(i32)
|
|
|
|
; CHECK: Collect constant i32 -3 from call void @g(i32 -3) with cost 2
|
|
define void @f(i1 %cond) {
|
|
entry:
|
|
call void @g(i32 -3)
|
|
br i1 %cond, label %true, label %ret
|
|
|
|
true:
|
|
call void @g(i32 -3)
|
|
br label %ret
|
|
|
|
ret:
|
|
ret void
|
|
}
|
|
|
|
; CHECK: Function: h
|
|
; CHECK-NOT: Collect constant i32 -193 from
|
|
define void @h(i1 %cond, i32 %p, i32 %q) {
|
|
entry:
|
|
%a = and i32 %p, 4294967103
|
|
call void @g(i32 %a)
|
|
br i1 %cond, label %true, label %ret
|
|
|
|
true:
|
|
%b = and i32 %q, 4294967103
|
|
call void @g(i32 %b)
|
|
br label %ret
|
|
|
|
ret:
|
|
ret void
|
|
}
|
|
|
|
; CHECK: Function: test_icmp_neg
|
|
; CHECK-NOT: Collect constant
|
|
define void @test_icmp_neg(i1 %cond, i32 %arg, i32 %arg2) {
|
|
entry:
|
|
%a = icmp ne i32 %arg, -5
|
|
call void @g2(i1 %a)
|
|
br i1 %cond, label %true, label %ret
|
|
|
|
true:
|
|
%b = icmp ne i32 %arg2, -5
|
|
call void @g2(i1 %b)
|
|
br label %ret
|
|
|
|
ret:
|
|
ret void
|
|
}
|
|
declare void @g2(i1)
|
|
|
|
; CHECK: Function: test_icmp_neg2
|
|
; CHECK: Hoist constant (i32 -500) to BB entry
|
|
define void @test_icmp_neg2(i1 %cond, i32 %arg, i32 %arg2) {
|
|
entry:
|
|
%a = icmp ne i32 %arg, -500
|
|
call void @g2(i1 %a)
|
|
br i1 %cond, label %true, label %ret
|
|
|
|
true:
|
|
%b = icmp ne i32 %arg2, -500
|
|
call void @g2(i1 %b)
|
|
br label %ret
|
|
|
|
ret:
|
|
ret void
|
|
}
|
|
|
|
; CHECK: Function: test_add_neg
|
|
; CHECK-NOT: Collect constant i32 -5
|
|
define void @test_add_neg(i1 %cond, i32 %arg, i32 %arg2) {
|
|
entry:
|
|
%a = add i32 %arg, -5
|
|
call void @g(i32 %a)
|
|
br i1 %cond, label %true, label %ret
|
|
|
|
true:
|
|
%b = add i32 %arg2, -5
|
|
call void @g(i32 %b)
|
|
br label %ret
|
|
|
|
ret:
|
|
ret void
|
|
}
|