Test source: git
Source: <stdin>
----------------------------------------
define void @slsr1(i32 %b, i32 %s) {
%0:
%mul0 = mul i32 %b, %s
call void @foo(i32 %mul0)
%b1 = add i32 %b, 1
%mul1 = mul i32 %b1, %s
call void @foo(i32 %mul1)
%b2 = add i32 %b, 2
%mul2 = mul i32 %b2, %s
call void @foo(i32 %mul2)
ret void
}
=>
define void @slsr1(i32 %b, i32 %s) {
%0:
%mul0 = mul i32 %b, %s
call void @foo(i32 %mul0)
%mul1 = add i32 %mul0, %s
call void @foo(i32 %mul1)
%mul2 = add i32 %mul1, %s
call void @foo(i32 %mul2)
ret void
}
Transformation doesn't verify!
ERROR: Source is more defined than target
Example:
i32 %b = #xd90047a2 (3640674210, -654293086)
i32 %s = undef
Source:
i32 %mul0 = #x00000000 (0) [based on undef value]
i32 %b1 = #xd90047a3 (3640674211, -654293085)
i32 %mul1 = #x00000000 (0) [based on undef value]
i32 %b2 = #xd90047a4 (3640674212, -654293084)
i32 %mul2 = #x00000000 (0) [based on undef value]
SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 > size: 0 align: 1 alloc type: 0
Block 1 > size: 0 align: 2 alloc type: 0
Target:
i32 %mul0 = #x43800000 (1132462080)
i32 %mul1 = #xfc1bc174 (4229677428, -65289868)
i32 %mul2 = #xf38dd8ae (4086159534, -208807762)
------------------- SMT STATS -------------------
Num queries: 5
Num invalid: 0
Num skips: 0
Num trivial: 0 (0.0%)
Num timeout: 1 (20.0%)
Num errors: 0 (0.0%)
Num SAT: 4 (80.0%)
Num UNSAT: 0 (0.0%)
+ : 'RUN: at line 1' + /home/nlopes/alive2/build/opt-alive.sh -slsr -gvn -S + /home/nlopes/llvm/build/bin/FileCheck --allow-unused-prefixes=false /home/nlopes/llvm/llvm/test/Transforms/StraightLineStrengthReduce/slsr-mul.ll Alive2: Transform doesn't verify; aborting! FileCheck error: '<stdin>' is empty. FileCheck command line: /home/nlopes/llvm/build/bin/FileCheck --allow-unused-prefixes=false /home/nlopes/llvm/llvm/test/Transforms/StraightLineStrengthReduce/slsr-mul.ll
NOTE: This test would pass if undef didn't exist!