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Commits on Oct 19, 2019

• [TargetLowering][DAGCombine][MSP430] add/use hook for Shift Amount Threshold (1/2)

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• [MSP430] Shift Amount Threshold in DAGCombine (Baseline Tests); NFC

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Commits on Oct 17, 2019

• [x86] add test for setcc to shift transform; NFC

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• [PowerPC] add tests for popcount with zext; NFC

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Commits on Oct 16, 2019

• [SLP] avoid reduction transform on patterns that the backend can load-combine (2nd try)

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Commits on Oct 15, 2019

• [DAGCombiner] fold select-of-constants based on sign-bit test

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• [InstCombine] fold a shifted bool zext to a select (2nd try)

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Commits on Oct 14, 2019

• Revert [InstCombine] fold a shifted bool zext to a select

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• [InstCombine] fold a shifted bool zext to a select

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• [InstCombine] add tests for select/shift transforms; NFC

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• [x86] adjust select to sra tests; NFC

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• [x86] add tests for possible select to sra transforms; NFC

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Commits on Oct 13, 2019

• [ConstantFold] fix inconsistent handling of extractelement with undef index (PR42689)

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• [InstCombine] don't assume 'inbounds' for bitcast deref or null pointer in non-default address space

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Commits on Oct 11, 2019

• [AArch64] add tests for (v)select-of-constants; NFC

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• [DAGCombiner] fold vselect-of-constants to shift

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Commits on Oct 10, 2019

• [x86] reduce duplicate test assertions; NFC

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• [DAGCombiner] fold select-of-constants to shift

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• [DAGCombiner] reduce code duplication; NFC

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• [AArch64][x86] add tests for (v)select bit magic; NFC

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Commits on Oct 9, 2019

• [ConstProp] add tests for extractelement with undef index; NFC

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• [InstCombine] add another test for gep inbounds; NFC

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• [SLP] respect target register width for GEP vectorization (PR43578)

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Commits on Oct 8, 2019

• [SLP] add test with prefer-vector-width function attribute; NFC (PR43578)

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• [SLP] add test with prefer-vector-width function attribute; NFC

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Commits on Oct 7, 2019

• [LoopVectorize] add test that asserted after cost model change (PR43582); NFC

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Commits on Oct 6, 2019

• Revert [DAGCombine] Match more patterns for half word bswap

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• [InstCombine] fold fneg disguised as select+fmul (PR43497)

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• [InstCombine] add fast-math-flags for better test coverage; NFC

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• [InstCombine] don't assume 'inbounds' for bitcast pointer to GEP transform (PR43501)

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Commits on Oct 5, 2019

• [SLP] avoid reduction transform on patterns that the backend can load-combine

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Commits on Oct 4, 2019

• [InstCombine] add tests for fneg disguised as fmul; NFC

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Commits on Oct 3, 2019

• [DAGCombiner] add operation legality checks before creating shift ops (PR43542)

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• [MSP430] add tests for unwanted shift codegen; NFC (PR43542)

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• [UpdateTestChecks] add basic support for parsing msp430 asm

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