| Andrew Trick | 9f0b95f | 2013-01-09 03:36:49 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -enable-misched -pre-RA-sched=source -scheditins=false \ |
| 2 | ; RUN: -disable-ifcvt-triangle-false -disable-post-ra | FileCheck %s |
| 3 | ; |
| 4 | target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64" |
| 5 | target triple = "powerpc64-bgq-linux" |
| 6 | |
| 7 | ; %val1 is a load live out of %entry. It should be hoisted |
| 8 | ; above the add. |
| 9 | ; CHECK: testload: |
| 10 | ; CHECK: %entry |
| 11 | ; CHECK: lwz |
| 12 | ; CHECK: addi |
| 13 | ; CHECK: bne |
| 14 | ; CHECK: %true |
| 15 | define i32 @testload(i32 *%ptr, i32 %sumin) { |
| 16 | entry: |
| 17 | %sum1 = add i32 %sumin, 1 |
| 18 | %val1 = load i32* %ptr |
| 19 | %p = icmp eq i32 %sumin, 0 |
| 20 | br i1 %p, label %true, label %end |
| 21 | true: |
| 22 | %sum2 = add i32 %sum1, 1 |
| 23 | %ptr2 = getelementptr i32* %ptr, i32 1 |
| 24 | %val = load i32* %ptr2 |
| 25 | %val2 = add i32 %val1, %val |
| 26 | br label %end |
| 27 | end: |
| 28 | %valmerge = phi i32 [ %val1, %entry], [ %val2, %true ] |
| 29 | %summerge = phi i32 [ %sum1, %entry], [ %sum2, %true ] |
| 30 | %sumout = add i32 %valmerge, %summerge |
| 31 | ret i32 %sumout |
| 32 | } |
| 33 | |
| 34 | ; The prefetch gets a default latency of 3 cycles and should be hoisted |
| 35 | ; above the add. |
| 36 | ; |
| 37 | ; CHECK: testprefetch: |
| 38 | ; CHECK: %entry |
| 39 | ; CHECK: dcbt |
| 40 | ; CHECK: addi |
| 41 | ; CHECK: blr |
| 42 | define i32 @testprefetch(i8 *%ptr, i32 %i) { |
| 43 | entry: |
| 44 | %val1 = add i32 %i, 1 |
| 45 | tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 3, i32 1 ) |
| 46 | %p = icmp eq i32 %i, 0 |
| 47 | br i1 %p, label %true, label %end |
| 48 | true: |
| 49 | %val2 = add i32 %val1, 1 |
| 50 | br label %end |
| 51 | end: |
| 52 | %valmerge = phi i32 [ %val1, %entry], [ %val2, %true ] |
| 53 | ret i32 %valmerge |
| 54 | } |
| 55 | declare void @llvm.prefetch(i8*, i32, i32, i32) nounwind |