RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-23 19:23:23 +01:00
Code Issues Projects Releases Wiki Activity

Revert "This patch builds on top of D13378 to handle constant condition."

Browse Source 
This reverts commit r249431. This caused failures in sqlite3: http://lab.llvm.org:8011/builders/clang-native-arm-lnt/builds/14453

llvm-svn: 249528
This commit is contained in:
James Molloy 2015-10-07 09:03:34 +00:00
parent d8693073cb
commit 0e044652c2
2 changed files with 0 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/Analysis/ScalarEvolution.cpp
View File

@ -3904,11 +3904,6 @@ const SCEV *ScalarEvolution::createNodeForSelectOrPHI(Instruction *I,
Value *Cond,
Value *TrueVal,
Value *FalseVal) {
// Handle "constant" branch or select. This can occur for instance when a
// loop pass transforms an inner loop and moves on to process the outer loop.
if (auto *CI = dyn_cast<ConstantInt>(Cond))
return getSCEV(CI->isOne() ? TrueVal : FalseVal);
// Try to match some simple smax or umax patterns.
auto *ICI = dyn_cast<ICmpInst>(Cond);
if (!ICI)

51
test/Analysis/ScalarEvolution/constant_condition.ll
View File

@ -1,51 +0,0 @@
; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
define i32 @branch_true(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @branch_true
entry:
br i1 true, label %add, label %merge
add:
%sum = add i32 %x, %y
br label %merge
merge:
%v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK-NEXT: --> (%x + %y) U: full-set S: full-set
ret i32 %v
}
define i32 @branch_false(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @branch_false
entry:
br i1 false, label %add, label %merge
add:
%sum = add i32 %x, %y
br label %merge
merge:
%v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK-NEXT: --> %x U: full-set S: full-set
ret i32 %v
}
define i32 @select_true(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @select_true
entry:
%v = select i1 true, i32 %x, i32 %y
; CHECK: %v = select i1 true, i32 %x, i32 %y
; CHECK-NEXT: --> %x U: full-set S: full-set
ret i32 %v
}
define i32 @select_false(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @select_false
entry:
%v = select i1 false, i32 %x, i32 %y
; CHECK: %v = select i1 false, i32 %x, i32 %y
; CHECK-NEXT: --> %y U: full-set S: full-set
ret i32 %v
}