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- ; RUN: opt -S < %s -instcombine -inline -jump-threading -loop-unroll -unroll-count=4 | FileCheck %s
- ;
- ; This is a test case that required a number of setup passes because
- ; it depends on block order.
- 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-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
- target triple = "x86_64-apple-macosx10.6.8"
- declare i1 @check() nounwind
- declare i32 @getval() nounwind
- ; Check that the loop exit merges values from all the iterations. This
- ; could be a tad fragile, but it's a good test.
- ;
- ; CHECK-LABEL: @foo(
- ; CHECK: return:
- ; CHECK: %retval.0 = phi i32 [ %tmp7.i, %land.lhs.true ], [ 0, %do.cond ], [ %tmp7.i.1, %land.lhs.true.1 ], [ 0, %do.cond.1 ], [ %tmp7.i.2, %land.lhs.true.2 ], [ 0, %do.cond.2 ], [ %tmp7.i.3, %land.lhs.true.3 ], [ 0, %do.cond.3 ]
- ; CHECK-NOT: @bar(
- ; CHECK: bar.exit.3
- define i32 @foo() uwtable ssp align 2 {
- entry:
- br i1 undef, label %return, label %if.end
- if.end: ; preds = %entry
- %call2 = call i32 @getval()
- br label %do.body
- do.body: ; preds = %do.cond, %if.end
- %call6 = call i32 @bar()
- %cmp = icmp ne i32 %call6, 0
- br i1 %cmp, label %land.lhs.true, label %do.cond
- land.lhs.true: ; preds = %do.body
- %call10 = call i32 @getval()
- %cmp11 = icmp eq i32 0, %call10
- br i1 %cmp11, label %return, label %do.cond
- do.cond: ; preds = %land.lhs.true, %do.body
- %cmp18 = icmp sle i32 0, %call2
- br i1 %cmp18, label %do.body, label %return
- return: ; preds = %do.cond, %land.lhs.true, %entry
- %retval.0 = phi i32 [ 0, %entry ], [ %call6, %land.lhs.true ], [ 0, %do.cond ]
- ret i32 %retval.0
- }
- define linkonce_odr i32 @bar() nounwind uwtable ssp align 2 {
- entry:
- br i1 undef, label %land.lhs.true, label %cond.end
- land.lhs.true: ; preds = %entry
- %cmp4 = call zeroext i1 @check()
- br i1 %cmp4, label %cond.true, label %cond.end
- cond.true: ; preds = %land.lhs.true
- %tmp7 = call i32 @getval()
- br label %cond.end
- cond.end: ; preds = %cond.true, %land.lhs.true, %entry
- %cond = phi i32 [ %tmp7, %cond.true ], [ 0, %land.lhs.true ], [ 0, %entry ]
- ret i32 %cond
- }
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