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